21580800032 has 24 divisors (see below), whose sum is σ = 46349673552. Its totient is φ = 9809454400.

The previous prime is 21580800023. The next prime is 21580800047. The reversal of 21580800032 is 23000808512.

It is a junction number, because it is equal to n+sod(n) for n = 21580799968 and 21580800004.

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, 30654194 + ... + 30654897.

It is an arithmetic number, because the mean of its divisors is an integer number (1931236398).

Almost surely, 2^21580800032 is an apocalyptic number.

21580800032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21580800032 is an abundant number, since it is smaller than the sum of its proper divisors (24768873520).

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

21580800032 is a wasteful number, since it uses less digits than its factorization.

21580800032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61309112 (or 61309104 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The spelling of 21580800032 in words is "twenty-one billion, five hundred eighty million, eight hundred thousand, thirty-two".