136646254319 has 2 divisors, whose sum is σ = 136646254320. Its totient is φ = 136646254318.

The previous prime is 136646254309. The next prime is 136646254343. The reversal of 136646254319 is 913452646631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136646254319 is a prime.

It is a super-2 number, since 2×136646254319² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136646254309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68323127159 + 68323127160.

It is an arithmetic number, because the mean of its divisors is an integer number (68323127160).

Almost surely, 2^136646254319 is an apocalyptic number.

136646254319 is a deficient number, since it is larger than the sum of its proper divisors (1).

136646254319 is an equidigital number, since it uses as much as digits as its factorization.

136646254319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 50.

The spelling of 136646254319 in words is "one hundred thirty-six billion, six hundred forty-six million, two hundred fifty-four thousand, three hundred nineteen".