21933915024 has 80 divisors (see below), whose sum is σ = 64790710272. Its totient is φ = 6263597184.

The previous prime is 21933915019. The next prime is 21933915041. The reversal of 21933915024 is 42051933912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677347 + ... + 708989.

Almost surely, 2^21933915024 is an apocalyptic number.

21933915024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21933915024 is an abundant number, since it is smaller than the sum of its proper divisors (42856795248).

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

21933915024 is a wasteful number, since it uses less digits than its factorization.

21933915024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33724 (or 33718 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 21933915024 in words is "twenty-one billion, nine hundred thirty-three million, nine hundred fifteen thousand, twenty-four".