64694542896 has 60 divisors (see below), whose sum is σ = 181812515040. Its totient is φ = 21474606720.

The previous prime is 64694542889. The next prime is 64694542901. The reversal of 64694542896 is 69824549646.

64694542896 is a `hidden beast` number, since 6 + 4 + 6 + 9 + 4 + 542 + 89 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 905475 + ... + 974306.

It is an arithmetic number, because the mean of its divisors is an integer number (3030208584).

Almost surely, 2^64694542896 is an apocalyptic number.

It is an amenable number.

64694542896 is an abundant number, since it is smaller than the sum of its proper divisors (117117972144).

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

64694542896 is a wasteful number, since it uses less digits than its factorization.

64694542896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880034 (or 1880025 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 64694542896 in words is "sixty-four billion, six hundred ninety-four million, five hundred forty-two thousand, eight hundred ninety-six".