136906308881 has 2 divisors, whose sum is σ = 136906308882. Its totient is φ = 136906308880.

The previous prime is 136906308871. The next prime is 136906308893. The reversal of 136906308881 is 188803609631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72597913600 + 64308395281 = 269440^2 + 253591^2 .

It is a cyclic number.

It is not a de Polignac number, because 136906308881 - 2¹⁸ = 136906046737 is a prime.

It is a super-2 number, since 2×136906308881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136906308871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68453154440 + 68453154441.

It is an arithmetic number, because the mean of its divisors is an integer number (68453154441).

Almost surely, 2^136906308881 is an apocalyptic number.

It is an amenable number.

136906308881 is a deficient number, since it is larger than the sum of its proper divisors (1).

136906308881 is an equidigital number, since it uses as much as digits as its factorization.

136906308881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 136906308881 in words is "one hundred thirty-six billion, nine hundred six million, three hundred eight thousand, eight hundred eighty-one".