21360407374503 has 48 divisors (see below), whose sum is σ = 32515399827456. Its totient is φ = 13496333296320.

The previous prime is 21360407374489. The next prime is 21360407374519. The reversal of 21360407374503 is 30547370406312.

21360407374503 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 0 + 4 + 0 + 73 + 74 + 503 = 666.

It is not a de Polignac number, because 21360407374503 - 2²² = 21360403180199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21360409374503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68250 + ... + 6536472.

It is an arithmetic number, because the mean of its divisors is an integer number (677404163072).

Almost surely, 2^{21360407374503} is an apocalyptic number.

21360407374503 is a deficient number, since it is larger than the sum of its proper divisors (11154992452953).

21360407374503 is a wasteful number, since it uses less digits than its factorization.

21360407374503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468524 (or 6468521 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

The spelling of 21360407374503 in words is "twenty-one trillion, three hundred sixty billion, four hundred seven million, three hundred seventy-four thousand, five hundred three".