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61030033260 = 22357557260879
BaseRepresentation
bin111000110101101011…
…000110011101101100
312211112021202220202020
4320311223012131230
51444442142031020
644011541230140
74260244503060
oct706553063554
9184467686666
1061030033260
1123978954319
12b9b2a02350
1359a7c81521
142d4d5bbaa0
1518c2db7c40
hexe35ac676c

61030033260 has 96 divisors (see below), whose sum is σ = 195647477760. Its totient is φ = 13924624128.

The previous prime is 61030033241. The next prime is 61030033291. The reversal of 61030033260 is 6233003016.

It is a self number, because there is not a number n which added to its sum of digits gives 61030033260.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103501 + ... + 364379.

It is an arithmetic number, because the mean of its divisors is an integer number (2037994560).

Almost surely, 261030033260 is an apocalyptic number.

61030033260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61030033260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97823738880).

61030033260 is an abundant number, since it is smaller than the sum of its proper divisors (134617444500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61030033260 is a wasteful number, since it uses less digits than its factorization.

61030033260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261455 (or 261453 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 61030033260 its reverse (6233003016), we get a palindrome (67263036276).

The spelling of 61030033260 in words is "sixty-one billion, thirty million, thirty-three thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 557 1114 1671 2228 2785 3342 3899 5570 6684 7798 8355 11140 11697 15596 16710 19495 23394 33420 38990 46788 58485 77980 116970 233940 260879 521758 782637 1043516 1304395 1565274 1826153 2608790 3130548 3652306 3913185 5217580 5478459 7304612 7826370 9130765 10956918 15652740 18261530 21913836 27392295 36523060 54784590 109569180 145309603 290619206 435928809 581238412 726548015 871857618 1017167221 1453096030 1743715236 2034334442 2179644045 2906192060 3051501663 4068668884 4359288090 5085836105 6103003326 8718576180 10171672210 12206006652 15257508315 20343344420 30515016630 61030033260