22516908552 has 128 divisors (see below), whose sum is σ = 67030905600. Its totient is φ = 6985211904.

The previous prime is 22516908551. The next prime is 22516908563. The reversal of 22516908552 is 25580961522.

22516908552 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 6 + 90 + 8 + 552 = 666.

It is a super-2 number, since 2×22516908552² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22516908498 and 22516908507.

It is not an unprimeable number, because it can be changed into a prime (22516908551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122568 + ... + 245064.

It is an arithmetic number, because the mean of its divisors is an integer number (523678950).

Almost surely, 2^22516908552 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 22516908552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33515452800).

22516908552 is an abundant number, since it is smaller than the sum of its proper divisors (44513997048).

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

22516908552 is a wasteful number, since it uses less digits than its factorization.

22516908552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122572 (or 122562 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 22516908552 in words is "twenty-two billion, five hundred sixteen million, nine hundred eight thousand, five hundred fifty-two".