136665165101 has 2 divisors, whose sum is σ = 136665165102. Its totient is φ = 136665165100.

The previous prime is 136665165097. The next prime is 136665165139. The reversal of 136665165101 is 101561566631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69498667876 + 67166497225 = 263626^2 + 259165^2 .

It is a cyclic number.

It is not a de Polignac number, because 136665165101 - 2² = 136665165097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136665965101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68332582550 + 68332582551.

It is an arithmetic number, because the mean of its divisors is an integer number (68332582551).

Almost surely, 2^136665165101 is an apocalyptic number.

It is an amenable number.

136665165101 is a deficient number, since it is larger than the sum of its proper divisors (1).

136665165101 is an equidigital number, since it uses as much as digits as its factorization.

136665165101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 136665165101 in words is "one hundred thirty-six billion, six hundred sixty-five million, one hundred sixty-five thousand, one hundred one".