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61395080292 = 223271318740867
BaseRepresentation
bin111001001011011011…
…101001010001100100
312212110201200020010200
4321023123221101210
52001214120032132
644112101350500
74302266400120
oct711333512144
9185421606120
1061395080292
1124045a16587
12ba95108430
135a357a55a0
142d85c84580
1518e4e74d7c
hexe4b6e9464

61395080292 has 72 divisors (see below), whose sum is σ = 191006926656. Its totient is φ = 16192108224.

The previous prime is 61395080269. The next prime is 61395080297. The reversal of 61395080292 is 29208059316.

61395080292 is a `hidden beast` number, since 6 + 139 + 508 + 0 + 2 + 9 + 2 = 666.

61395080292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×613950802922 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61395080297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9367158 + ... + 9373709.

Almost surely, 261395080292 is an apocalyptic number.

It is an amenable number.

61395080292 is an abundant number, since it is smaller than the sum of its proper divisors (129611846364).

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

61395080292 is a wasteful number, since it uses less digits than its factorization.

61395080292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18740897 (or 18740892 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 61395080292 in words is "sixty-one billion, three hundred ninety-five million, eighty thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 52 63 78 84 91 117 126 156 182 234 252 273 364 468 546 819 1092 1638 3276 18740867 37481734 56222601 74963468 112445202 131186069 168667803 224890404 243631271 262372138 337335606 393558207 487262542 524744276 674671212 730893813 787116414 974525084 1180674621 1461787626 1574232828 1705418897 2192681439 2361349242 2923575252 3410837794 4385362878 4722698484 5116256691 6821675588 8770725756 10232513382 15348770073 20465026764 30697540146 61395080292