21619655886132 has 144 divisors (see below), whose sum is σ = 54978177945600. Its totient is φ = 7163394638400.

The previous prime is 21619655886131. The next prime is 21619655886137. The reversal of 21619655886132 is 23168855691612.

21619655886132 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 9 + 6 + 5 + 5 + 8 + 8 + 613 + 2 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 21619655886132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21619655886131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11555133157 + ... + 11555135027.

It is an arithmetic number, because the mean of its divisors is an integer number (381792902400).

Almost surely, 2^{21619655886132} is an apocalyptic number.

It is an amenable number.

21619655886132 is an abundant number, since it is smaller than the sum of its proper divisors (33358522059468).

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

21619655886132 is a wasteful number, since it uses less digits than its factorization.

21619655886132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514 (or 4509 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 63.

The spelling of 21619655886132 in words is "twenty-one trillion, six hundred nineteen billion, six hundred fifty-five million, eight hundred eighty-six thousand, one hundred thirty-two".