21626544605130 has 48 divisors (see below), whose sum is σ = 56230151519880. Its totient is φ = 5766962095104.

The previous prime is 21626544605011. The next prime is 21626544605177. The reversal of 21626544605130 is 3150644562612.

21626544605130 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 6 + 5 + 4 + 4 + 605 + 1 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4561457963049 + 17065086642081 = 2135757^2 + 4130991^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2101606 + ... + 6904334.

Almost surely, 2^{21626544605130} is an apocalyptic number.

21626544605130 is an abundant number, since it is smaller than the sum of its proper divisors (34603606914750).

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

21626544605130 is a wasteful number, since it uses less digits than its factorization.

21626544605130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852775 (or 4852772 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 21626544605130 in words is "twenty-one trillion, six hundred twenty-six billion, five hundred forty-four million, six hundred five thousand, one hundred thirty".