3115612117857 has 4 divisors (see below), whose sum is σ = 4154149490480. Its totient is φ = 2077074745236.

The previous prime is 3115612117853. The next prime is 3115612117861. The reversal of 3115612117857 is 7587112165113.

3115612117857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3115612117853) and next prime (3115612117861).

It is not a de Polignac number, because 3115612117857 - 2² = 3115612117853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3115612117853) 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, 519268686307 + ... + 519268686312.

It is an arithmetic number, because the mean of its divisors is an integer number (1038537372620).

Almost surely, 2^{3115612117857} is an apocalyptic number.

It is an amenable number.

3115612117857 is a deficient number, since it is larger than the sum of its proper divisors (1038537372623).

3115612117857 is a wasteful number, since it uses less digits than its factorization.

3115612117857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038537372622.

The product of its digits is 352800, while the sum is 48.

The spelling of 3115612117857 in words is "three trillion, one hundred fifteen billion, six hundred twelve million, one hundred seventeen thousand, eight hundred fifty-seven".