22139188146 has 12 divisors (see below), whose sum is σ = 47968241022. Its totient is φ = 7379729376.

The previous prime is 22139188139. The next prime is 22139188193. The reversal of 22139188146 is 64188193122.

It can be written as a sum of positive squares in only one way, i.e., 17334618921 + 4804569225 = 131661^2 + 69315^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 614977431 + ... + 614977466.

Almost surely, 2^22139188146 is an apocalyptic number.

22139188146 is an abundant number, since it is smaller than the sum of its proper divisors (25829052876).

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

22139188146 is a wasteful number, since it uses less digits than its factorization.

22139188146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229954905 (or 1229954902 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 22139188146 in words is "twenty-two billion, one hundred thirty-nine million, one hundred eighty-eight thousand, one hundred forty-six".