22856144544 has 192 divisors, whose sum is σ = 71042832000. Its totient is φ = 7217309952.

The previous prime is 22856144539. The next prime is 22856144551. The reversal of 22856144544 is 44544165822.

22856144544 is a `hidden beast` number, since 2 + 2 + 8 + 5 + 61 + 44 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22856144544.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1321102 + ... + 1338290.

It is an arithmetic number, because the mean of its divisors is an integer number (370014750).

Almost surely, 2^22856144544 is an apocalyptic number.

22856144544 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 22856144544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35521416000).

22856144544 is an abundant number, since it is smaller than the sum of its proper divisors (48186687456).

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

22856144544 is an equidigital number, since it uses as much as digits as its factorization.

22856144544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17239 (or 17213 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 45.

The spelling of 22856144544 in words is "twenty-two billion, eight hundred fifty-six million, one hundred forty-four thousand, five hundred forty-four".