61607099976 has 16 divisors (see below), whose sum is σ = 154017750000. Its totient is φ = 20535699984.

The previous prime is 61607099971. The next prime is 61607100007. The reversal of 61607099976 is 67999070616.

It is not an unprimeable number, because it can be changed into a prime (61607099971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283481226 + ... + 1283481273.

It is an arithmetic number, because the mean of its divisors is an integer number (9626109375).

Almost surely, 2^61607099976 is an apocalyptic number.

It is an amenable number.

61607099976 is an abundant number, since it is smaller than the sum of its proper divisors (92410650024).

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

61607099976 is a wasteful number, since it uses less digits than its factorization.

61607099976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566962508 (or 2566962504 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 60.

The spelling of 61607099976 in words is "sixty-one billion, six hundred seven million, ninety-nine thousand, nine hundred seventy-six".