136494756539 has 4 divisors (see below), whose sum is σ = 136528824624. Its totient is φ = 136460688456.

The previous prime is 136494756479. The next prime is 136494756571. The reversal of 136494756539 is 935657494631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136494756539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136494753539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17028032 + ... + 17036045.

It is an arithmetic number, because the mean of its divisors is an integer number (34132206156).

Almost surely, 2^136494756539 is an apocalyptic number.

136494756539 is a deficient number, since it is larger than the sum of its proper divisors (34068085).

136494756539 is an equidigital number, since it uses as much as digits as its factorization.

136494756539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34068084.

The product of its digits is 73483200, while the sum is 62.

The spelling of 136494756539 in words is "one hundred thirty-six billion, four hundred ninety-four million, seven hundred fifty-six thousand, five hundred thirty-nine".