21582864751882 has 32 divisors (see below), whose sum is σ = 37481506153344. Its totient is φ = 9129901132800.

The previous prime is 21582864751867. The next prime is 21582864752021. The reversal of 21582864751882 is 28815746828512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27923244 + ... + 28685767.

It is an arithmetic number, because the mean of its divisors is an integer number (1171297067292).

Almost surely, 2^{21582864751882} is an apocalyptic number.

21582864751882 is a deficient number, since it is larger than the sum of its proper divisors (15898641401462).

21582864751882 is a wasteful number, since it uses less digits than its factorization.

21582864751882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56609374.

The product of its digits is 137625600, while the sum is 67.

The spelling of 21582864751882 in words is "twenty-one trillion, five hundred eighty-two billion, eight hundred sixty-four million, seven hundred fifty-one thousand, eight hundred eighty-two".