6797515139 has 4 divisors (see below), whose sum is σ = 6912727320. Its totient is φ = 6682302960.

The previous prime is 6797515133. The next prime is 6797515171. The reversal of 6797515139 is 9315157976.

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 6797515139 - 2²⁰ = 6796466563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6797515133) 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, 57606002 + ... + 57606119.

It is an arithmetic number, because the mean of its divisors is an integer number (1728181830).

Almost surely, 2^6797515139 is an apocalyptic number.

6797515139 is a deficient number, since it is larger than the sum of its proper divisors (115212181).

6797515139 is a wasteful number, since it uses less digits than its factorization.

6797515139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115212180.

The product of its digits is 1786050, while the sum is 53.

The square root of 6797515139 is about 82447.0444527880. The cubic root of 6797515139 is about 1894.3056786198.

The spelling of 6797515139 in words is "six billion, seven hundred ninety-seven million, five hundred fifteen thousand, one hundred thirty-nine".