21622025226464 has 24 divisors (see below), whose sum is σ = 45842851562760. Its totient is φ = 9979396258176.

The previous prime is 21622025226443. The next prime is 21622025226481. The reversal of 21622025226464 is 46462252022612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25988010674 + ... + 25988011505.

It is an arithmetic number, because the mean of its divisors is an integer number (1910118815115).

Almost surely, 2^{21622025226464} is an apocalyptic number.

It is an amenable number.

21622025226464 is an abundant number, since it is smaller than the sum of its proper divisors (24220826336296).

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

21622025226464 is a wasteful number, since it uses less digits than its factorization.

21622025226464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51976022202 (or 51976022194 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 44.

The spelling of 21622025226464 in words is "twenty-one trillion, six hundred twenty-two billion, twenty-five million, two hundred twenty-six thousand, four hundred sixty-four".