22537639680 has 144 divisors (see below), whose sum is σ = 72053452800. Its totient is φ = 6003871744.

The previous prime is 22537639679. The next prime is 22537639777. The reversal of 22537639680 is 8693673522.

It is a congruent number.

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, 4693921 + ... + 4698719.

It is an arithmetic number, because the mean of its divisors is an integer number (500371200).

Almost surely, 2^22537639680 is an apocalyptic number.

22537639680 is a gapful number since it is divisible by the number (20) 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 22537639680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36026726400).

22537639680 is an abundant number, since it is smaller than the sum of its proper divisors (49515813120).

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

22537639680 is a wasteful number, since it uses less digits than its factorization.

22537639680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6032 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 22537639680 in words is "twenty-two billion, five hundred thirty-seven million, six hundred thirty-nine thousand, six hundred eighty".