22687908128 has 18 divisors (see below), whose sum is σ = 44668496691. Its totient is φ = 11343528032.

The previous prime is 22687908109. The next prime is 22687908137. The reversal of 22687908128 is 82180978622.

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 only one way, i.e., 11343954064 + 11343954064 = 106508^2 + 106508^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106508.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22687908128.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 838751 + ... + 865377.

Almost surely, 2^22687908128 is an apocalyptic number.

It is an amenable number.

22687908128 is a deficient number, since it is larger than the sum of its proper divisors (21980588563).

22687908128 is an frugal number, since it uses more digits than its factorization.

22687908128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53264 (or 26629 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 22687908128 in words is "twenty-two billion, six hundred eighty-seven million, nine hundred eight thousand, one hundred twenty-eight".