22537452520448 has 88 divisors (see below), whose sum is σ = 46238023734552. Its totient is φ = 10975403638784.

The previous prime is 22537452520447. The next prime is 22537452520493. The reversal of 22537452520448 is 84402525473522.

It can be written as a sum of positive squares in 4 ways, for example, as 7002755497984 + 15534697022464 = 2646272^2 + 3941408^2 .

It is a super-2 number, since 2×22537452520448² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 22537452520448.

It is not an unprimeable number, because it can be changed into a prime (22537452520447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5919686 + ... + 8950842.

Almost surely, 2^{22537452520448} 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 22537452520448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23119011867276).

22537452520448 is an abundant number, since it is smaller than the sum of its proper divisors (23700571214104).

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

22537452520448 is a wasteful number, since it uses less digits than its factorization.

22537452520448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031367 (or 3031349 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 53.

The spelling of 22537452520448 in words is "twenty-two trillion, five hundred thirty-seven billion, four hundred fifty-two million, five hundred twenty thousand, four hundred forty-eight".