22544478144 has 112 divisors (see below), whose sum is σ = 66324784800. Its totient is φ = 7509362688.

The previous prime is 22544478137. The next prime is 22544478167. The reversal of 22544478144 is 44187444522.

22544478144 is a `hidden beast` number, since 22 + 544 + 4 + 7 + 81 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22544478144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2880124 + ... + 2887940.

Almost surely, 2^22544478144 is an apocalyptic number.

22544478144 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 22544478144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33162392400).

22544478144 is an abundant number, since it is smaller than the sum of its proper divisors (43780306656).

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

22544478144 is a wasteful number, since it uses less digits than its factorization.

22544478144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507 (or 9491 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 45.

The spelling of 22544478144 in words is "twenty-two billion, five hundred forty-four million, four hundred seventy-eight thousand, one hundred forty-four".