22919911540 has 12 divisors (see below), whose sum is σ = 48131814276. Its totient is φ = 9167964608.

The previous prime is 22919911537. The next prime is 22919911541. The reversal of 22919911540 is 4511991922.

It can be written as a sum of positive squares in 2 ways, for example, as 15856853776 + 7063057764 = 125924^2 + 84042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22919911541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572997769 + ... + 572997808.

It is an arithmetic number, because the mean of its divisors is an integer number (4010984523).

Almost surely, 2^22919911540 is an apocalyptic number.

22919911540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22919911540 is an abundant number, since it is smaller than the sum of its proper divisors (25211902736).

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

22919911540 is a wasteful number, since it uses less digits than its factorization.

22919911540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145995586 (or 1145995584 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 22919911540 in words is "twenty-two billion, nine hundred nineteen million, nine hundred eleven thousand, five hundred forty".