136685934841 has 2 divisors, whose sum is σ = 136685934842. Its totient is φ = 136685934840.

The previous prime is 136685934809. The next prime is 136685934863. The reversal of 136685934841 is 148439586631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79057131241 + 57628803600 = 281171^2 + 240060^2 .

It is a cyclic number.

It is not a de Polignac number, because 136685934841 - 2⁵ = 136685934809 is a prime.

It is not a weakly prime, because it can be changed into another prime (136685934941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68342967420 + 68342967421.

It is an arithmetic number, because the mean of its divisors is an integer number (68342967421).

Almost surely, 2^136685934841 is an apocalyptic number.

It is an amenable number.

136685934841 is a deficient number, since it is larger than the sum of its proper divisors (1).

136685934841 is an equidigital number, since it uses as much as digits as its factorization.

136685934841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 58.

The spelling of 136685934841 in words is "one hundred thirty-six billion, six hundred eighty-five million, nine hundred thirty-four thousand, eight hundred forty-one".