21588205132 has 24 divisors (see below), whose sum is σ = 40898495232. Its totient is φ = 9911616000.

The previous prime is 21588205097. The next prime is 21588205141. The reversal of 21588205132 is 23150288512.

It is a super-2 number, since 2×21588205132² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21588205091 and 21588205100.

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, 1076869 + ... + 1096732.

It is an arithmetic number, because the mean of its divisors is an integer number (1704103968).

Almost surely, 2^21588205132 is an apocalyptic number.

It is an amenable number.

21588205132 is a deficient number, since it is larger than the sum of its proper divisors (19310290100).

21588205132 is a wasteful number, since it uses less digits than its factorization.

21588205132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173809 (or 2173807 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 21588205132 in words is "twenty-one billion, five hundred eighty-eight million, two hundred five thousand, one hundred thirty-two".