64937580860 has 24 divisors (see below), whose sum is σ = 137901158640. Its totient is φ = 25683177344.

The previous prime is 64937580823. The next prime is 64937580881. The reversal of 64937580860 is 6808573946.

It is a junction number, because it is equal to n+sod(n) for n = 64937580796 and 64937580805.

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, 18239114 + ... + 18242673.

It is an arithmetic number, because the mean of its divisors is an integer number (5745881610).

Almost surely, 2^64937580860 is an apocalyptic number.

It is an amenable number.

64937580860 is an abundant number, since it is smaller than the sum of its proper divisors (72963577780).

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

64937580860 is a wasteful number, since it uses less digits than its factorization.

64937580860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36481885 (or 36481883 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 64937580860 in words is "sixty-four billion, nine hundred thirty-seven million, five hundred eighty thousand, eight hundred sixty".