657625223064 has 16 divisors (see below), whose sum is σ = 1644063057720. Its totient is φ = 219208407680.

The previous prime is 657625223011. The next prime is 657625223089. The reversal of 657625223064 is 460322526756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13700525457 + ... + 13700525504.

Almost surely, 2^657625223064 is an apocalyptic number.

It is an amenable number.

657625223064 is an abundant number, since it is smaller than the sum of its proper divisors (986437834656).

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

657625223064 is a wasteful number, since it uses less digits than its factorization.

657625223064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27401050970 (or 27401050966 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 657625223064 in words is "six hundred fifty-seven billion, six hundred twenty-five million, two hundred twenty-three thousand, sixty-four".