136761161 has 2 divisors, whose sum is σ = 136761162. Its totient is φ = 136761160.

The previous prime is 136761109. The next prime is 136761167. The reversal of 136761161 is 161167631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134676025 + 2085136 = 11605^2 + 1444^2 .

It is an emirp because it is prime and its reverse (161167631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136761161 - 2¹⁰ = 136760137 is a prime.

It is not a weakly prime, because it can be changed into another prime (136761167) 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 as a sum of consecutive naturals, namely, 68380580 + 68380581.

It is an arithmetic number, because the mean of its divisors is an integer number (68380581).

Almost surely, 2^136761161 is an apocalyptic number.

It is an amenable number.

136761161 is a deficient number, since it is larger than the sum of its proper divisors (1).

136761161 is an equidigital number, since it uses as much as digits as its factorization.

136761161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 136761161 is about 11694.4927636901. The cubic root of 136761161 is about 515.2139256412.

The spelling of 136761161 in words is "one hundred thirty-six million, seven hundred sixty-one thousand, one hundred sixty-one".