21174157132 has 24 divisors (see below), whose sum is σ = 37618439936. Its totient is φ = 10426120848.

The previous prime is 21174157127. The next prime is 21174157171. The reversal of 21174157132 is 23175147112.

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, 1176433 + ... + 1194295.

Almost surely, 2^21174157132 is an apocalyptic number.

It is an amenable number.

21174157132 is a deficient number, since it is larger than the sum of its proper divisors (16444282804).

21174157132 is a wasteful number, since it uses less digits than its factorization.

21174157132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22357 (or 22355 counting only the distinct ones).

The product of its digits is 11760, while the sum is 34.

The spelling of 21174157132 in words is "twenty-one billion, one hundred seventy-four million, one hundred fifty-seven thousand, one hundred thirty-two".