6859612115691 has 4 divisors (see below), whose sum is σ = 9146149487592. Its totient is φ = 4573074743792.

The previous prime is 6859612115687. The next prime is 6859612115711. The reversal of 6859612115691 is 1965112169586.

It is a happy number.

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 6859612115691 - 2² = 6859612115687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6859612115891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143268685946 + ... + 1143268685951.

It is an arithmetic number, because the mean of its divisors is an integer number (2286537371898).

Almost surely, 2^{6859612115691} is an apocalyptic number.

6859612115691 is a deficient number, since it is larger than the sum of its proper divisors (2286537371901).

6859612115691 is a wasteful number, since it uses less digits than its factorization.

6859612115691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286537371900.

The product of its digits is 6998400, while the sum is 60.

The spelling of 6859612115691 in words is "six trillion, eight hundred fifty-nine billion, six hundred twelve million, one hundred fifteen thousand, six hundred ninety-one".