21175192504 has 16 divisors (see below), whose sum is σ = 41793143400. Its totient is φ = 10030354272.

The previous prime is 21175192499. The next prime is 21175192529. The reversal of 21175192504 is 40529157112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69655087 + ... + 69655390.

Almost surely, 2^21175192504 is an apocalyptic number.

It is an amenable number.

21175192504 is a deficient number, since it is larger than the sum of its proper divisors (20617950896).

21175192504 is a wasteful number, since it uses less digits than its factorization.

21175192504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139310502 (or 139310498 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 21175192504 in words is "twenty-one billion, one hundred seventy-five million, one hundred ninety-two thousand, five hundred four".