21625201551712 has 48 divisors (see below), whose sum is σ = 46445889417984. Its totient is φ = 9829456272000.

The previous prime is 21625201551671. The next prime is 21625201551769. The reversal of 21625201551712 is 21715510252612.

It is a super-2 number, since 2×21625201551712² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 19623037 + ... + 20695747.

It is an arithmetic number, because the mean of its divisors is an integer number (967622696208).

Almost surely, 2^{21625201551712} is an apocalyptic number.

21625201551712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21625201551712 is an abundant number, since it is smaller than the sum of its proper divisors (24820687866272).

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

21625201551712 is a wasteful number, since it uses less digits than its factorization.

21625201551712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130003 (or 1129995 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 21625201551712 in words is "twenty-one trillion, six hundred twenty-five billion, two hundred one million, five hundred fifty-one thousand, seven hundred twelve".