22237543872 has 224 divisors, whose sum is σ = 69459287040. Its totient is φ = 6952366080.

The previous prime is 22237543841. The next prime is 22237543901. The reversal of 22237543872 is 27834573222.

22237543872 is a `hidden beast` number, since 2 + 2 + 2 + 37 + 543 + 8 + 72 = 666.

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, 9722313 + ... + 9724599.

Almost surely, 2^22237543872 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 22237543872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34729643520).

22237543872 is an abundant number, since it is smaller than the sum of its proper divisors (47221743168).

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

22237543872 is a wasteful number, since it uses less digits than its factorization.

22237543872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 2640 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The spelling of 22237543872 in words is "twenty-two billion, two hundred thirty-seven million, five hundred forty-three thousand, eight hundred seventy-two".