136953777815 has 4 divisors (see below), whose sum is σ = 164344533384. Its totient is φ = 109563022248.

The previous prime is 136953777799. The next prime is 136953777833. The reversal of 136953777815 is 518777359631.

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

It is a cyclic number.

It is not a de Polignac number, because 136953777815 - 2⁴ = 136953777799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13695377777 + ... + 13695377786.

It is an arithmetic number, because the mean of its divisors is an integer number (41086133346).

Almost surely, 2^136953777815 is an apocalyptic number.

136953777815 is a deficient number, since it is larger than the sum of its proper divisors (27390755569).

136953777815 is an equidigital number, since it uses as much as digits as its factorization.

136953777815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27390755568.

The product of its digits is 33339600, while the sum is 62.

The spelling of 136953777815 in words is "one hundred thirty-six billion, nine hundred fifty-three million, seven hundred seventy-seven thousand, eight hundred fifteen".