21462432635136 has 72 divisors (see below), whose sum is σ = 58449774238240. Its totient is φ = 6987768754176.

The previous prime is 21462432635129. The next prime is 21462432635213. The reversal of 21462432635136 is 63153623426412.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324919021 + ... + 324985068.

Almost surely, 2^{21462432635136} is an apocalyptic number.

It is an amenable number.

21462432635136 is an abundant number, since it is smaller than the sum of its proper divisors (36987341603104).

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

21462432635136 is an equidigital number, since it uses as much as digits as its factorization.

21462432635136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649904151 (or 649904137 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 48.

The spelling of 21462432635136 in words is "twenty-one trillion, four hundred sixty-two billion, four hundred thirty-two million, six hundred thirty-five thousand, one hundred thirty-six".