21174157134 has 32 divisors (see below), whose sum is σ = 50673198240. Its totient is φ = 6515125056.

The previous prime is 21174157127. The next prime is 21174157171. The reversal of 21174157134 is 43175147112.

21174157134 is a `hidden beast` number, since 2 + 1 + 17 + 41 + 571 + 34 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15080607 + ... + 15082010.

It is an arithmetic number, because the mean of its divisors is an integer number (1583537445).

Almost surely, 2^21174157134 is an apocalyptic number.

21174157134 is an abundant number, since it is smaller than the sum of its proper divisors (29499041106).

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

21174157134 is a wasteful number, since it uses less digits than its factorization.

21174157134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30162641 (or 30162635 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The spelling of 21174157134 in words is "twenty-one billion, one hundred seventy-four million, one hundred fifty-seven thousand, one hundred thirty-four".