136412225138 has 18 divisors (see below), whose sum is σ = 238031793261. Its totient is φ = 58460815224.

The previous prime is 136412225119. The next prime is 136412225161. The reversal of 136412225138 is 831522214631.

It can be written as a sum of positive squares in 2 ways, for example, as 136392091969 + 20133169 = 369313^2 + 4487^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=261163.

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, 3637628 + ... + 3674936.

Almost surely, 2^136412225138 is an apocalyptic number.

136412225138 is a deficient number, since it is larger than the sum of its proper divisors (101619568123).

136412225138 is an frugal number, since it uses more digits than its factorization.

136412225138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74634 (or 37318 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

Adding to 136412225138 its reverse (831522214631), we get a palindrome (967934439769).

The spelling of 136412225138 in words is "one hundred thirty-six billion, four hundred twelve million, two hundred twenty-five thousand, one hundred thirty-eight".