21238876374 has 16 divisors (see below), whose sum is σ = 42481444800. Its totient is φ = 7079010120.

The previous prime is 21238876367. The next prime is 21238876387. The reversal of 21238876374 is 47367883212.

It is a congruent number.

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, 76024 + ... + 219675.

It is an arithmetic number, because the mean of its divisors is an integer number (2655090300).

Almost surely, 2^21238876374 is an apocalyptic number.

21238876374 is an abundant number, since it is smaller than the sum of its proper divisors (21242568426).

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

21238876374 is a wasteful number, since it uses less digits than its factorization.

21238876374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307675.

The product of its digits is 2709504, while the sum is 51.

The spelling of 21238876374 in words is "twenty-one billion, two hundred thirty-eight million, eight hundred seventy-six thousand, three hundred seventy-four".