21363175374 has 32 divisors (see below), whose sum is σ = 43921730304. Its totient is φ = 6924576960.

The previous prime is 21363175367. The next prime is 21363175391. The reversal of 21363175374 is 47357136312.

It is a happy number.

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, 312384 + ... + 374579.

It is an arithmetic number, because the mean of its divisors is an integer number (1372554072).

Almost surely, 2^21363175374 is an apocalyptic number.

21363175374 is an abundant number, since it is smaller than the sum of its proper divisors (22558554930).

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

21363175374 is a wasteful number, since it uses less digits than its factorization.

21363175374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687112.

The product of its digits is 317520, while the sum is 42.

The spelling of 21363175374 in words is "twenty-one billion, three hundred sixty-three million, one hundred seventy-five thousand, three hundred seventy-four".