22117258944 has 336 divisors, whose sum is σ = 73875144096. Its totient is φ = 6304235520.

The previous prime is 22117258939. The next prime is 22117258957. The reversal of 22117258944 is 44985271122.

22117258944 is a `hidden beast` number, since 2 + 21 + 1 + 7 + 2 + 589 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22117258944.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13032304 + ... + 13034000.

Almost surely, 2^22117258944 is an apocalyptic number.

22117258944 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 22117258944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36937572048).

22117258944 is an abundant number, since it is smaller than the sum of its proper divisors (51757885152).

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

22117258944 is a wasteful number, since it uses less digits than its factorization.

22117258944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1730 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 22117258944 in words is "twenty-two billion, one hundred seventeen million, two hundred fifty-eight thousand, nine hundred forty-four".