21003875514216 has 48 divisors (see below), whose sum is σ = 65011995640800. Its totient is φ = 6001107289632.

The previous prime is 21003875514211. The next prime is 21003875514227. The reversal of 21003875514216 is 61241557830012.

21003875514216 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 3 + 87 + 551 + 4 + 2 + 16 = 666.

It is not an unprimeable number, because it can be changed into a prime (21003875514211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20837177586 + ... + 20837178593.

It is an arithmetic number, because the mean of its divisors is an integer number (1354416575850).

Almost surely, 2^{21003875514216} is an apocalyptic number.

It is an amenable number.

21003875514216 is an abundant number, since it is smaller than the sum of its proper divisors (44008120126584).

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

21003875514216 is a wasteful number, since it uses less digits than its factorization.

21003875514216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41674356198 (or 41674356191 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 21003875514216 in words is "twenty-one trillion, three billion, eight hundred seventy-five million, five hundred fourteen thousand, two hundred sixteen".