21888673800 has 96 divisors (see below), whose sum is σ = 77548459200. Its totient is φ = 5003124480.

The previous prime is 21888673753. The next prime is 21888673811. The reversal of 21888673800 is 837688812.

It is a super-2 number, since 2×21888673800² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2601595 + ... + 2609994.

It is an arithmetic number, because the mean of its divisors is an integer number (807796450).

Almost surely, 2^21888673800 is an apocalyptic number.

21888673800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21888673800 is an abundant number, since it is smaller than the sum of its proper divisors (55659785400).

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

21888673800 is a wasteful number, since it uses less digits than its factorization.

21888673800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211615 (or 5211606 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 21888673800 in words is "twenty-one billion, eight hundred eighty-eight million, six hundred seventy-three thousand, eight hundred".