22919537664 has 297 divisors, whose sum is σ = 70697789643. Its totient is φ = 7150546944.

The previous prime is 22919537561. The next prime is 22919537677. The reversal of 22919537664 is 46673591922.

The square root of 22919537664 is 151392.

It is a perfect power (a square), and thus also a powerful number.

22919537664 is a `hidden beast` number, since 2 + 29 + 195 + 376 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22919537664.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 276138967 + ... + 276139049.

Almost surely, 2^22919537664 is an apocalyptic number.

22919537664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

22919537664 is the 151392-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22919537664

22919537664 is an abundant number, since it is smaller than the sum of its proper divisors (47778251979).

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

22919537664 is an equidigital number, since it uses as much as digits as its factorization.

22919537664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 107 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 22919537664 in words is "twenty-two billion, nine hundred nineteen million, five hundred thirty-seven thousand, six hundred sixty-four".