21113712618496 has 66 divisors (see below), whose sum is σ = 44121672070532. Its totient is φ = 10097862297600.

The previous prime is 21113712618419. The next prime is 21113712618533. The reversal of 21113712618496 is 69481621731112.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18946830 + ... + 20030221.

Almost surely, 2^{21113712618496} is an apocalyptic number.

It is an amenable number.

21113712618496 is an abundant number, since it is smaller than the sum of its proper divisors (23007959452036).

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

21113712618496 is an equidigital number, since it uses as much as digits as its factorization.

21113712618496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38977117 (or 38977076 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The spelling of 21113712618496 in words is "twenty-one trillion, one hundred thirteen billion, seven hundred twelve million, six hundred eighteen thousand, four hundred ninety-six".