21626272560020 has 48 divisors (see below), whose sum is σ = 47832257907840. Its totient is φ = 8190622509696.

The previous prime is 21626272559909. The next prime is 21626272560071. The reversal of 21626272560020 is 2006527262612.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21626272560020.

It is a congruent number.

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, 15281867 + ... + 16636946.

It is an arithmetic number, because the mean of its divisors is an integer number (996505373080).

Almost surely, 2^{21626272560020} is an apocalyptic number.

21626272560020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21626272560020 is an abundant number, since it is smaller than the sum of its proper divisors (26205985347820).

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

21626272560020 is a wasteful number, since it uses less digits than its factorization.

21626272560020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31920624 (or 31920622 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 21626272560020 in words is "twenty-one trillion, six hundred twenty-six billion, two hundred seventy-two million, five hundred sixty thousand, twenty".