22557522540 has 192 divisors, whose sum is σ = 73987522560. Its totient is φ = 5028791040.

The previous prime is 22557522517. The next prime is 22557522587. The reversal of 22557522540 is 4522575522.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2749845 + ... + 2758035.

It is an arithmetic number, because the mean of its divisors is an integer number (385351680).

Almost surely, 2^22557522540 is an apocalyptic number.

22557522540 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 22557522540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36993761280).

22557522540 is an abundant number, since it is smaller than the sum of its proper divisors (51430000020).

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

22557522540 is a wasteful number, since it uses less digits than its factorization.

22557522540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372 (or 8370 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 39.

The spelling of 22557522540 in words is "twenty-two billion, five hundred fifty-seven million, five hundred twenty-two thousand, five hundred forty".