136994668519 has 2 divisors, whose sum is σ = 136994668520. Its totient is φ = 136994668518.

The previous prime is 136994668513. The next prime is 136994668537. The reversal of 136994668519 is 915866499631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136994668519 is a prime.

It is a super-2 number, since 2×136994668519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136994668513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68497334259 + 68497334260.

It is an arithmetic number, because the mean of its divisors is an integer number (68497334260).

Almost surely, 2^136994668519 is an apocalyptic number.

136994668519 is a deficient number, since it is larger than the sum of its proper divisors (1).

136994668519 is an equidigital number, since it uses as much as digits as its factorization.

136994668519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75582720, while the sum is 67.

The spelling of 136994668519 in words is "one hundred thirty-six billion, nine hundred ninety-four million, six hundred sixty-eight thousand, five hundred nineteen".