136872535185 has 20 divisors (see below), whose sum is σ = 245356693428. Its totient is φ = 72998685216.

The previous prime is 136872535171. The next prime is 136872535207. The reversal of 136872535185 is 581535278631.

136872535185 is a `hidden beast` number, since 1 + 3 + 6 + 8 + 72 + 53 + 518 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31989826449 + 104882708736 = 178857^2 + 323856^2 .

It is not a de Polignac number, because 136872535185 - 2¹³ = 136872526993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 168978034 + ... + 168978843.

Almost surely, 2^136872535185 is an apocalyptic number.

136872535185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136872535185 is a deficient number, since it is larger than the sum of its proper divisors (108484158243).

136872535185 is an equidigital number, since it uses as much as digits as its factorization.

136872535185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337956894 (or 337956885 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 136872535185 in words is "one hundred thirty-six billion, eight hundred seventy-two million, five hundred thirty-five thousand, one hundred eighty-five".