22172370854432 has 96 divisors (see below), whose sum is σ = 45406736766720. Its totient is φ = 10648234321920.

The previous prime is 22172370854423. The next prime is 22172370854443. The reversal of 22172370854432 is 23445807327122.

It is a super-2 number, since 2×22172370854432² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683451332 + ... + 683483772.

It is an arithmetic number, because the mean of its divisors is an integer number (472986841320).

Almost surely, 2^{22172370854432} 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 22172370854432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22703368383360).

22172370854432 is an abundant number, since it is smaller than the sum of its proper divisors (23234365912288).

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

22172370854432 is a wasteful number, since it uses less digits than its factorization.

22172370854432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39874 (or 39866 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 50.

The spelling of 22172370854432 in words is "twenty-two trillion, one hundred seventy-two billion, three hundred seventy million, eight hundred fifty-four thousand, four hundred thirty-two".