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61441431260 = 225111914698907
BaseRepresentation
bin111001001110001100…
…011101011011011100
312212120221220002201012
4321032030131123130
52001313001300020
644120435034352
74303401356126
oct711614353334
9185527802635
1061441431260
112406a0a4770
12baa873b9b8
135a42283ab1
142d8c0ac216
1518e907d7c5
hexe4e31d6dc

61441431260 has 48 divisors (see below), whose sum is σ = 148164992640. Its totient is φ = 21166424640.

The previous prime is 61441431257. The next prime is 61441431287. The reversal of 61441431260 is 6213414416.

It is a super-3 number, since 3×614414312603 (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7345274 + ... + 7353633.

It is an arithmetic number, because the mean of its divisors is an integer number (3086770680).

Almost surely, 261441431260 is an apocalyptic number.

It is an amenable number.

61441431260 is an abundant number, since it is smaller than the sum of its proper divisors (86723561380).

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

61441431260 is a wasteful number, since it uses less digits than its factorization.

61441431260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14698946 (or 14698944 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 61441431260 its reverse (6213414416), we get a palindrome (67654845676).

The spelling of 61441431260 in words is "sixty-one billion, four hundred forty-one million, four hundred thirty-one thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 19 20 22 38 44 55 76 95 110 190 209 220 380 418 836 1045 2090 4180 14698907 29397814 58795628 73494535 146989070 161687977 279279233 293978140 323375954 558558466 646751908 808439885 1117116932 1396396165 1616879770 2792792330 3072071563 3233759540 5585584660 6144143126 12288286252 15360357815 30720715630 61441431260