136680155 has 4 divisors (see below), whose sum is σ = 164016192. Its totient is φ = 109344120.

The previous prime is 136680151. The next prime is 136680157. The reversal of 136680155 is 551086631.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 136680155 - 2² = 136680151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136680151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13668011 + ... + 13668020.

It is an arithmetic number, because the mean of its divisors is an integer number (41004048).

Almost surely, 2^136680155 is an apocalyptic number.

136680155 is a deficient number, since it is larger than the sum of its proper divisors (27336037).

136680155 is an equidigital number, since it uses as much as digits as its factorization.

136680155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27336036.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 136680155 is about 11691.0288255568. The cubic root of 136680155 is about 515.1121821787.

The spelling of 136680155 in words is "one hundred thirty-six million, six hundred eighty thousand, one hundred fifty-five".