21238714998624 has 192 divisors, whose sum is σ = 56142609969600. Its totient is φ = 7030163374080.

The previous prime is 21238714998601. The next prime is 21238714998679. The reversal of 21238714998624 is 42689941783212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9919996594 + ... + 9919998734.

It is an arithmetic number, because the mean of its divisors is an integer number (292409426925).

Almost surely, 2^{21238714998624} is an apocalyptic number.

21238714998624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21238714998624 is an abundant number, since it is smaller than the sum of its proper divisors (34903894970976).

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

21238714998624 is a wasteful number, since it uses less digits than its factorization.

21238714998624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593 (or 3585 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 66.

The spelling of 21238714998624 in words is "twenty-one trillion, two hundred thirty-eight billion, seven hundred fourteen million, nine hundred ninety-eight thousand, six hundred twenty-four".