21462734636 has 12 divisors (see below), whose sum is σ = 42925469328. Its totient is φ = 9198314832.

The previous prime is 21462734611. The next prime is 21462734659. The reversal of 21462734636 is 63643726412.

21462734636 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383263091 + ... + 383263146.

It is an arithmetic number, because the mean of its divisors is an integer number (3577122444).

Almost surely, 2^21462734636 is an apocalyptic number.

It is an amenable number.

21462734636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21462734636 is a wasteful number, since it uses less digits than its factorization.

21462734636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766526248 (or 766526246 counting only the distinct ones).

The product of its digits is 870912, while the sum is 44.

The spelling of 21462734636 in words is "twenty-one billion, four hundred sixty-two million, seven hundred thirty-four thousand, six hundred thirty-six".