21427065048264 has 32 divisors (see below), whose sum is σ = 53568757511520. Its totient is φ = 7142209030656.

The previous prime is 21427065048217. The next prime is 21427065048359. The reversal of 21427065048264 is 46284056072412.

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, 7922194 + ... + 10276929.

It is an arithmetic number, because the mean of its divisors is an integer number (1674023672235).

Almost surely, 2^{21427065048264} is an apocalyptic number.

21427065048264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21427065048264 is an abundant number, since it is smaller than the sum of its proper divisors (32141692463256).

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

21427065048264 is a wasteful number, since it uses less digits than its factorization.

21427065048264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18248189 (or 18248185 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 51.

The spelling of 21427065048264 in words is "twenty-one trillion, four hundred twenty-seven billion, sixty-five million, forty-eight thousand, two hundred sixty-four".