640172413524 has 48 divisors (see below), whose sum is σ = 1707474585600. Its totient is φ = 182869102176.

The previous prime is 640172413511. The next prime is 640172413547. The reversal of 640172413524 is 425314271046.

640172413524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361464 + ... + 1187855.

It is an arithmetic number, because the mean of its divisors is an integer number (35572387200).

Almost surely, 2^640172413524 is an apocalyptic number.

It is an amenable number.

640172413524 is an abundant number, since it is smaller than the sum of its proper divisors (1067302172076).

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

640172413524 is a wasteful number, since it uses less digits than its factorization.

640172413524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554252 (or 1554250 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 640172413524 in words is "six hundred forty billion, one hundred seventy-two million, four hundred thirteen thousand, five hundred twenty-four".