21204576274 has 16 divisors (see below), whose sum is σ = 36759139200. Its totient is φ = 8985566304.

The previous prime is 21204576257. The next prime is 21204576293. The reversal of 21204576274 is 47267540212.

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, 8507814 + ... + 8510305.

It is an arithmetic number, because the mean of its divisors is an integer number (2297446200).

Almost surely, 2^21204576274 is an apocalyptic number.

21204576274 is a deficient number, since it is larger than the sum of its proper divisors (15554562926).

21204576274 is a wasteful number, since it uses less digits than its factorization.

21204576274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17018217.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 21204576274 in words is "twenty-one billion, two hundred four million, five hundred seventy-six thousand, two hundred seventy-four".