22157889817392 has 360 divisors, whose sum is σ = 77237111530800. Its totient is φ = 5891472728064.

The previous prime is 22157889817381. The next prime is 22157889817433. The reversal of 22157889817392 is 29371898875122.

22157889817392 is a `hidden beast` number, since 2 + 2 + 1 + 578 + 8 + 9 + 8 + 17 + 39 + 2 = 666.

22157889817392 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 22157889817392.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9637959 + ... + 11713497.

It is an arithmetic number, because the mean of its divisors is an integer number (214547532030).

Almost surely, 2^{22157889817392} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22157889817392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38618555765400).

22157889817392 is an abundant number, since it is smaller than the sum of its proper divisors (55079221713408).

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

22157889817392 is a wasteful number, since it uses less digits than its factorization.

22157889817392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075673 (or 2075657 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 72.

The spelling of 22157889817392 in words is "twenty-two trillion, one hundred fifty-seven billion, eight hundred eighty-nine million, eight hundred seventeen thousand, three hundred ninety-two".