136505155 has 24 divisors (see below), whose sum is σ = 177454368. Its totient is φ = 100455168.

The previous prime is 136505137. The next prime is 136505167. The reversal of 136505155 is 551505631.

It is not a de Polignac number, because 136505155 - 2⁵ = 136505123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187402 + ... + 188128.

It is an arithmetic number, because the mean of its divisors is an integer number (7393932).

Almost surely, 2^136505155 is an apocalyptic number.

136505155 is a deficient number, since it is larger than the sum of its proper divisors (40949213).

136505155 is an equidigital number, since it uses as much as digits as its factorization.

136505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 136505155 is about 11683.5420570990. The cubic root of 136505155 is about 514.8922450272.

The spelling of 136505155 in words is "one hundred thirty-six million, five hundred five thousand, one hundred fifty-five".