21374263645002 has 24 divisors (see below), whose sum is σ = 46363351829184. Its totient is φ = 7116685738344.

The previous prime is 21374263644997. The next prime is 21374263645037. The reversal of 21374263645002 is 20054636247312.

21374263645002 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 4 + 2 + 636 + 4 + 5 + 0 + 0 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672384498 + ... + 672416285.

It is an arithmetic number, because the mean of its divisors is an integer number (1931806326216).

Almost surely, 2^{21374263645002} is an apocalyptic number.

21374263645002 is an abundant number, since it is smaller than the sum of its proper divisors (24989088184182).

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

21374263645002 is a wasteful number, since it uses less digits than its factorization.

21374263645002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344801674 (or 1344801671 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 21374263645002 in words is "twenty-one trillion, three hundred seventy-four billion, two hundred sixty-three million, six hundred forty-five thousand, two".