21602250605416 has 64 divisors (see below), whose sum is σ = 48193885958400. Its totient is φ = 8975792483328.

The previous prime is 21602250605407. The next prime is 21602250605449. The reversal of 21602250605416 is 61450605220612.

It is a happy 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, 265578196 + ... + 265659523.

It is an arithmetic number, because the mean of its divisors is an integer number (753029468100).

Almost surely, 2^{21602250605416} is an apocalyptic number.

21602250605416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21602250605416 is an abundant number, since it is smaller than the sum of its proper divisors (26591635352984).

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

21602250605416 is a wasteful number, since it uses less digits than its factorization.

21602250605416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531237778 (or 531237774 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 21602250605416 in words is "twenty-one trillion, six hundred two billion, two hundred fifty million, six hundred five thousand, four hundred sixteen".