21526565265252 has 36 divisors (see below), whose sum is σ = 54606650272720. Its totient is φ = 7150166551152.

The previous prime is 21526565265229. The next prime is 21526565265277. The reversal of 21526565265252 is 25256256562512.

21526565265252 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 6 + 565 + 26 + 5 + 2 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056456502 + ... + 1056476877.

Almost surely, 2^{21526565265252} is an apocalyptic number.

It is an amenable number.

21526565265252 is an abundant number, since it is smaller than the sum of its proper divisors (33080085007468).

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

21526565265252 is a wasteful number, since it uses less digits than its factorization.

21526565265252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112933672 (or 2112933667 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 54.

The spelling of 21526565265252 in words is "twenty-one trillion, five hundred twenty-six billion, five hundred sixty-five million, two hundred sixty-five thousand, two hundred fifty-two".