21633633055424 has 56 divisors (see below), whose sum is σ = 46316009108208. Its totient is φ = 9966499845120.

The previous prime is 21633633055403. The next prime is 21633633055493. The reversal of 21633633055424 is 42455033633612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23312687 + ... + 24222894.

It is an arithmetic number, because the mean of its divisors is an integer number (827071591218).

Almost surely, 2^{21633633055424} is an apocalyptic number.

It is an amenable number.

21633633055424 is an abundant number, since it is smaller than the sum of its proper divisors (24682376052784).

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

21633633055424 is a wasteful number, since it uses less digits than its factorization.

21633633055424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47536153 (or 47536143 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 47.

The spelling of 21633633055424 in words is "twenty-one trillion, six hundred thirty-three billion, six hundred thirty-three million, fifty-five thousand, four hundred twenty-four".