22542947520 has 112 divisors (see below), whose sum is σ = 71660369760. Its totient is φ = 6004187136.

The previous prime is 22542947509. The next prime is 22542947591. The reversal of 22542947520 is 2574924522.

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, 805116 + ... + 832644.

It is an arithmetic number, because the mean of its divisors is an integer number (639824730).

Almost surely, 2^22542947520 is an apocalyptic number.

22542947520 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 22542947520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35830184880).

22542947520 is an abundant number, since it is smaller than the sum of its proper divisors (49117422240).

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

22542947520 is a wasteful number, since it uses less digits than its factorization.

22542947520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28402 (or 28392 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 22542947520 in words is "twenty-two billion, five hundred forty-two million, nine hundred forty-seven thousand, five hundred twenty".