22508903138 has 6 divisors (see below), whose sum is σ = 33763672971. Its totient is φ = 11254345482.

The previous prime is 22508903111. The next prime is 22508903141. The reversal of 22508903138 is 83130980522.

It can be written as a sum of positive squares in only one way, i.e., 11254451569 + 11254451569 = 106087^2 + 106087^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106087.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22508903095 and 22508903104.

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, 159131 + ... + 265217.

Almost surely, 2^22508903138 is an apocalyptic number.

22508903138 is a deficient number, since it is larger than the sum of its proper divisors (11254769833).

22508903138 is an frugal number, since it uses more digits than its factorization.

22508903138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212176 (or 106089 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 22508903138 in words is "twenty-two billion, five hundred eight million, nine hundred three thousand, one hundred thirty-eight".