501506672538 has 16 divisors (see below), whose sum is σ = 1035368614656. Its totient is φ = 161776345920.

The previous prime is 501506672533. The next prime is 501506672549. The reversal of 501506672538 is 835276605105.

It is a super-2 number, since 2×501506672538² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (501506672533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348136031 + ... + 1348136402.

It is an arithmetic number, because the mean of its divisors is an integer number (64710538416).

Almost surely, 2^501506672538 is an apocalyptic number.

501506672538 is an abundant number, since it is smaller than the sum of its proper divisors (533861942118).

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

501506672538 is a wasteful number, since it uses less digits than its factorization.

501506672538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696272469.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 501506672538 in words is "five hundred one billion, five hundred six million, six hundred seventy-two thousand, five hundred thirty-eight".