501956408864 has 48 divisors (see below), whose sum is σ = 990913240800. Its totient is φ = 250296313344.

The previous prime is 501956408857. The next prime is 501956408869. The reversal of 501956408864 is 468804659105.

It is not an unprimeable number, because it can be changed into a prime (501956408869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69838679 + ... + 69845865.

It is an arithmetic number, because the mean of its divisors is an integer number (20644025850).

Almost surely, 2^501956408864 is an apocalyptic number.

It is an amenable number.

501956408864 is a deficient number, since it is larger than the sum of its proper divisors (488956831936).

501956408864 is a wasteful number, since it uses less digits than its factorization.

501956408864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12825 (or 12817 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 501956408864 in words is "five hundred one billion, nine hundred fifty-six million, four hundred eight thousand, eight hundred sixty-four".