22905920664 has 288 divisors, whose sum is σ = 71174048400. Its totient is φ = 6852833280.

The previous prime is 22905920663. The next prime is 22905920693. The reversal of 22905920664 is 46602950922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22905920663) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56004492 + ... + 56004900.

Almost surely, 2^22905920664 is an apocalyptic number.

22905920664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22905920664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35587024200).

22905920664 is an abundant number, since it is smaller than the sum of its proper divisors (48268127736).

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

22905920664 is an equidigital number, since it uses as much as digits as its factorization.

22905920664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 22905920664 in words is "twenty-two billion, nine hundred five million, nine hundred twenty thousand, six hundred sixty-four".