21652507552700 has 36 divisors (see below), whose sum is σ = 46992706383672. Its totient is φ = 8659756017600.

The previous prime is 21652507552699. The next prime is 21652507552721. The reversal of 21652507552700 is 725570525612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14889371 + ... + 16278770.

It is an arithmetic number, because the mean of its divisors is an integer number (1305352955102).

Almost surely, 2^{21652507552700} is an apocalyptic number.

21652507552700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21652507552700 is an abundant number, since it is smaller than the sum of its proper divisors (25340198830972).

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

21652507552700 is a wasteful number, since it uses less digits than its factorization.

21652507552700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31175102 (or 31175095 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 21652507552700 in words is "twenty-one trillion, six hundred fifty-two billion, five hundred seven million, five hundred fifty-two thousand, seven hundred".