21799813297932 has 48 divisors (see below), whose sum is σ = 59492667875200. Its totient is φ = 6884151567120.

The previous prime is 21799813297901. The next prime is 21799813297949. The reversal of 21799813297932 is 23979231899712.

21799813297932 is a `hidden beast` number, since 2 + 179 + 9 + 81 + 3 + 297 + 93 + 2 = 666.

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, 5311843294 + ... + 5311847397.

Almost surely, 2^{21799813297932} is an apocalyptic number.

It is an amenable number.

21799813297932 is an abundant number, since it is smaller than the sum of its proper divisors (37692854577268).

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

21799813297932 is a wasteful number, since it uses less digits than its factorization.

21799813297932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623690723 (or 10623690715 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The spelling of 21799813297932 in words is "twenty-one trillion, seven hundred ninety-nine billion, eight hundred thirteen million, two hundred ninety-seven thousand, nine hundred thirty-two".