21632488692 has 24 divisors (see below), whose sum is σ = 51428182176. Its totient is φ = 7074775968.

The previous prime is 21632488643. The next prime is 21632488711. The reversal of 21632488692 is 29688423612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17006038 + ... + 17007309.

It is an arithmetic number, because the mean of its divisors is an integer number (2142840924).

Almost surely, 2^21632488692 is an apocalyptic number.

It is an amenable number.

21632488692 is an abundant number, since it is smaller than the sum of its proper divisors (29795693484).

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

21632488692 is a wasteful number, since it uses less digits than its factorization.

21632488692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34013407 (or 34013405 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The spelling of 21632488692 in words is "twenty-one billion, six hundred thirty-two million, four hundred eighty-eight thousand, six hundred ninety-two".