22557717216 has 144 divisors (see below), whose sum is σ = 66602600064. Its totient is φ = 7510402944.

The previous prime is 22557717191. The next prime is 22557717289. The reversal of 22557717216 is 61271775522.

22557717216 is a `hidden beast` number, since 2 + 2 + 5 + 577 + 1 + 72 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12650661 + ... + 12652443.

It is an arithmetic number, because the mean of its divisors is an integer number (462518056).

Almost surely, 2^22557717216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22557717216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33301300032).

22557717216 is an abundant number, since it is smaller than the sum of its proper divisors (44044882848).

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

22557717216 is a wasteful number, since it uses less digits than its factorization.

22557717216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3415 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The spelling of 22557717216 in words is "twenty-two billion, five hundred fifty-seven million, seven hundred seventeen thousand, two hundred sixteen".