136456623439 has 2 divisors, whose sum is σ = 136456623440. Its totient is φ = 136456623438.

The previous prime is 136456623419. The next prime is 136456623481. The reversal of 136456623439 is 934326654631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136456623439 - 2¹³ = 136456615247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136456623419) 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, 68228311719 + 68228311720.

It is an arithmetic number, because the mean of its divisors is an integer number (68228311720).

Almost surely, 2^136456623439 is an apocalyptic number.

136456623439 is a deficient number, since it is larger than the sum of its proper divisors (1).

136456623439 is an equidigital number, since it uses as much as digits as its factorization.

136456623439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 52.

The spelling of 136456623439 in words is "one hundred thirty-six billion, four hundred fifty-six million, six hundred twenty-three thousand, four hundred thirty-nine".