21457674204 has 24 divisors (see below), whose sum is σ = 50330047488. Its totient is φ = 7115109360.

The previous prime is 21457674179. The next prime is 21457674221. The reversal of 21457674204 is 40247675412.

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, 4678702 + ... + 4683285.

It is an arithmetic number, because the mean of its divisors is an integer number (2097085312).

Almost surely, 2^21457674204 is an apocalyptic number.

It is an amenable number.

21457674204 is an abundant number, since it is smaller than the sum of its proper divisors (28872373284).

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

21457674204 is a wasteful number, since it uses less digits than its factorization.

21457674204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362185 (or 9362183 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 21457674204 in words is "twenty-one billion, four hundred fifty-seven million, six hundred seventy-four thousand, two hundred four".