61597550976 has 64 divisors (see below), whose sum is σ = 176204547120. Its totient is φ = 18953091072.

The previous prime is 61597550969. The next prime is 61597550981. The reversal of 61597550976 is 67905579516.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6164635 + ... + 6174618.

Almost surely, 2^61597550976 is an apocalyptic number.

It is an amenable number.

61597550976 is an abundant number, since it is smaller than the sum of its proper divisors (114606996144).

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

61597550976 is a wasteful number, since it uses less digits than its factorization.

61597550976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339283 (or 12339271 counting only the distinct ones).

The product of its (nonzero) digits is 17860500, while the sum is 60.

The spelling of 61597550976 in words is "sixty-one billion, five hundred ninety-seven million, five hundred fifty thousand, nine hundred seventy-six".