22915791648 has 480 divisors, whose sum is σ = 75083500800. Its totient is φ = 6823305216.

The previous prime is 22915791599. The next prime is 22915791653. The reversal of 22915791648 is 84619751922.

It is a happy number.

22915791648 is a `hidden beast` number, since 2 + 2 + 9 + 1 + 579 + 1 + 64 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 22915791594 and 22915791603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 100950511 + ... + 100950737.

It is an arithmetic number, because the mean of its divisors is an integer number (156423960).

Almost surely, 2^22915791648 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 22915791648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37541750400).

22915791648 is an abundant number, since it is smaller than the sum of its proper divisors (52167709152).

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

22915791648 is a wasteful number, since it uses less digits than its factorization.

22915791648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 357 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 22915791648 in words is "twenty-two billion, nine hundred fifteen million, seven hundred ninety-one thousand, six hundred forty-eight".