21946207170252 has 24 divisors (see below), whose sum is σ = 54220041244656. Its totient is φ = 6885084602368.

The previous prime is 21946207170221. The next prime is 21946207170421. The reversal of 21946207170252 is 25207170264912.

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, 53789723253 + ... + 53789723660.

It is an arithmetic number, because the mean of its divisors is an integer number (2259168385194).

Almost surely, 2^{21946207170252} is an apocalyptic number.

It is an amenable number.

21946207170252 is an abundant number, since it is smaller than the sum of its proper divisors (32273834074404).

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

21946207170252 is a wasteful number, since it uses less digits than its factorization.

21946207170252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107579446937 (or 107579446935 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 21946207170252 in words is "twenty-one trillion, nine hundred forty-six billion, two hundred seven million, one hundred seventy thousand, two hundred fifty-two".