21360513217302 has 24 divisors (see below), whose sum is σ = 52892699395536. Its totient is φ = 6103003776336.

The previous prime is 21360513217289. The next prime is 21360513217321. The reversal of 21360513217302 is 20371231506312.

21360513217302 is a `hidden beast` number, since 2 + 1 + 3 + 605 + 1 + 3 + 2 + 17 + 30 + 2 = 666.

It is a super-3 number, since 3×21360513217302³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

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, 84763941213 + ... + 84763941464.

It is an arithmetic number, because the mean of its divisors is an integer number (2203862474814).

Almost surely, 2^{21360513217302} is an apocalyptic number.

21360513217302 is an abundant number, since it is smaller than the sum of its proper divisors (31532186178234).

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

21360513217302 is a wasteful number, since it uses less digits than its factorization.

21360513217302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169527882692 (or 169527882689 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 21360513217302 in words is "twenty-one trillion, three hundred sixty billion, five hundred thirteen million, two hundred seventeen thousand, three hundred two".