501494315944 has 8 divisors (see below), whose sum is σ = 940301842410. Its totient is φ = 250747157968.

The previous prime is 501494315923. The next prime is 501494315953. The reversal of 501494315944 is 449513494105.

It can be written as a sum of positive squares in only one way, i.e., 415857316900 + 85636999044 = 644870^2 + 292638^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×501494315944² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31343394739 + ... + 31343394754.

Almost surely, 2^501494315944 is an apocalyptic number.

It is an amenable number.

501494315944 is a deficient number, since it is larger than the sum of its proper divisors (438807526466).

501494315944 is a wasteful number, since it uses less digits than its factorization.

501494315944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62686789499 (or 62686789495 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 501494315944 in words is "five hundred one billion, four hundred ninety-four million, three hundred fifteen thousand, nine hundred forty-four".