22776621144 has 32 divisors (see below), whose sum is σ = 56949808320. Its totient is φ = 7591106336.

The previous prime is 22776621139. The next prime is 22776621169. The reversal of 22776621144 is 44112667722.

It is a junction number, because it is equal to n+sod(n) for n = 22776621096 and 22776621105.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 109639 + ... + 239945.

It is an arithmetic number, because the mean of its divisors is an integer number (1779681510).

Almost surely, 2^22776621144 is an apocalyptic number.

22776621144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22776621144 is an abundant number, since it is smaller than the sum of its proper divisors (34173187176).

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

22776621144 is a wasteful number, since it uses less digits than its factorization.

22776621144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137599 (or 137595 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The spelling of 22776621144 in words is "twenty-two billion, seven hundred seventy-six million, six hundred twenty-one thousand, one hundred forty-four".