22231551168 has 448 divisors, whose sum is σ = 71630438400. Its totient is φ = 6735052800.

The previous prime is 22231551143. The next prime is 22231551191. The reversal of 22231551168 is 86115513222.

22231551168 is a `hidden beast` number, since 22 + 23 + 1 + 551 + 1 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175051521 + ... + 175051647.

Almost surely, 2^22231551168 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 22231551168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35815219200).

22231551168 is an abundant number, since it is smaller than the sum of its proper divisors (49398887232).

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

22231551168 is a wasteful number, since it uses less digits than its factorization.

22231551168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 309 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The spelling of 22231551168 in words is "twenty-two billion, two hundred thirty-one million, five hundred fifty-one thousand, one hundred sixty-eight".