641932497824 has 24 divisors (see below), whose sum is σ = 1264362226848. Its totient is φ = 320824630720.

The previous prime is 641932497761. The next prime is 641932497881. The reversal of 641932497824 is 428794239146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4351892 + ... + 4496979.

It is an arithmetic number, because the mean of its divisors is an integer number (52681759452).

Almost surely, 2^641932497824 is an apocalyptic number.

It is an amenable number.

641932497824 is a deficient number, since it is larger than the sum of its proper divisors (622429729024).

641932497824 is a wasteful number, since it uses less digits than its factorization.

641932497824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851148 (or 8851140 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 59.

The spelling of 641932497824 in words is "six hundred forty-one billion, nine hundred thirty-two million, four hundred ninety-seven thousand, eight hundred twenty-four".