136906308893 has 2 divisors, whose sum is σ = 136906308894. Its totient is φ = 136906308892.

The previous prime is 136906308881. The next prime is 136906308937. The reversal of 136906308893 is 398803609631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85903506649 + 51002802244 = 293093^2 + 225838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136906308893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136906308863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68453154446 + 68453154447.

It is an arithmetic number, because the mean of its divisors is an integer number (68453154447).

Almost surely, 2^136906308893 is an apocalyptic number.

It is an amenable number.

136906308893 is a deficient number, since it is larger than the sum of its proper divisors (1).

136906308893 is an equidigital number, since it uses as much as digits as its factorization.

136906308893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 136906308893 in words is "one hundred thirty-six billion, nine hundred six million, three hundred eight thousand, eight hundred ninety-three".