640232573104 has 20 divisors (see below), whose sum is σ = 1305737485240. Its totient is φ = 303268060800.

The previous prime is 640232573093. The next prime is 640232573117. The reversal of 640232573104 is 401375232046.

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, 1053013797 + ... + 1053014404.

It is an arithmetic number, because the mean of its divisors is an integer number (65286874262).

Almost surely, 2^640232573104 is an apocalyptic number.

It is an amenable number.

640232573104 is an abundant number, since it is smaller than the sum of its proper divisors (665504912136).

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

640232573104 is a wasteful number, since it uses less digits than its factorization.

640232573104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106028228 (or 2106028222 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 640232573104 in words is "six hundred forty billion, two hundred thirty-two million, five hundred seventy-three thousand, one hundred four".