22139129888 has 54 divisors (see below), whose sum is σ = 45191043261. Its totient is φ = 10676072064.

The previous prime is 22139129819. The next prime is 22139129893. The reversal of 22139129888 is 88892193122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 22125967504 + 13162384 = 148748^2 + 3628^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105212.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24408731 + ... + 24409637.

Almost surely, 2^22139129888 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 22139129888

22139129888 is an abundant number, since it is smaller than the sum of its proper divisors (23051913373).

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

22139129888 is an frugal number, since it uses more digits than its factorization.

22139129888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 938 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The spelling of 22139129888 in words is "twenty-two billion, one hundred thirty-nine million, one hundred twenty-nine thousand, eight hundred eighty-eight".