22777312344 has 128 divisors (see below), whose sum is σ = 60338304000. Its totient is φ = 7150809600.

The previous prime is 22777312339. The next prime is 22777312361. The reversal of 22777312344 is 44321377722.

It is a super-2 number, since 2×22777312344² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22777312296 and 22777312305.

It is a congruent number.

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, 11093622 + ... + 11095674.

It is an arithmetic number, because the mean of its divisors is an integer number (471393000).

Almost surely, 2^22777312344 is an apocalyptic number.

22777312344 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 22777312344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30169152000).

22777312344 is an abundant number, since it is smaller than the sum of its proper divisors (37560991656).

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

22777312344 is a wasteful number, since it uses less digits than its factorization.

22777312344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 2381 counting only the distinct ones).

The product of its digits is 395136, while the sum is 42.

The spelling of 22777312344 in words is "twenty-two billion, seven hundred seventy-seven million, three hundred twelve thousand, three hundred forty-four".