641938300564 has 24 divisors (see below), whose sum is σ = 1226406103776. Its totient is φ = 291578820000.

The previous prime is 641938300513. The next prime is 641938300573. The reversal of 641938300564 is 465003839146.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5221462 + ... + 5342989.

It is an arithmetic number, because the mean of its divisors is an integer number (51100254324).

Almost surely, 2^641938300564 is an apocalyptic number.

It is an amenable number.

641938300564 is a deficient number, since it is larger than the sum of its proper divisors (584467803212).

641938300564 is a wasteful number, since it uses less digits than its factorization.

641938300564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10565847 (or 10565845 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 641938300564 in words is "six hundred forty-one billion, nine hundred thirty-eight million, three hundred thousand, five hundred sixty-four".