22540043020 has 48 divisors (see below), whose sum is σ = 51731866368. Its totient is φ = 8181351360.

The previous prime is 22540043003. The next prime is 22540043023. The reversal of 22540043020 is 2034004522.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22540042982 and 22540043000.

It is not an unprimeable number, because it can be changed into a prime (22540043023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26689 + ... + 213991.

It is an arithmetic number, because the mean of its divisors is an integer number (1077747216).

Almost surely, 2^22540043020 is an apocalyptic number.

22540043020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22540043020 is an abundant number, since it is smaller than the sum of its proper divisors (29191823348).

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

22540043020 is a wasteful number, since it uses less digits than its factorization.

22540043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187870 (or 187868 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 22540043020 its reverse (2034004522), we get a palindrome (24574047542).

The spelling of 22540043020 in words is "twenty-two billion, five hundred forty million, forty-three thousand, twenty".