308565690137 has 2 divisors, whose sum is σ = 308565690138. Its totient is φ = 308565690136.

The previous prime is 308565690131. The next prime is 308565690161. The reversal of 308565690137 is 731096565803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299702597401 + 8863092736 = 547451^2 + 94144^2 .

It is a cyclic number.

It is not a de Polignac number, because 308565690137 - 2³⁸ = 33687783193 is a prime.

It is not a weakly prime, because it can be changed into another prime (308565690131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154282845068 + 154282845069.

It is an arithmetic number, because the mean of its divisors is an integer number (154282845069).

Almost surely, 2^308565690137 is an apocalyptic number.

It is an amenable number.

308565690137 is a deficient number, since it is larger than the sum of its proper divisors (1).

308565690137 is an equidigital number, since it uses as much as digits as its factorization.

308565690137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 308565690137 in words is "three hundred eight billion, five hundred sixty-five million, six hundred ninety thousand, one hundred thirty-seven".