6857579128319 has 4 divisors (see below), whose sum is σ = 6857602410240. Its totient is φ = 6857555846400.

The previous prime is 6857579128277. The next prime is 6857579128321. The reversal of 6857579128319 is 9138219757586.

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 6857579128319 - 2²⁰ = 6857578079743 is a prime.

It is a super-2 number, since 2×6857579128319² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857579128619) 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, 11193407 + ... + 11790144.

It is an arithmetic number, because the mean of its divisors is an integer number (1714400602560).

Almost surely, 2^{6857579128319} is an apocalyptic number.

6857579128319 is a deficient number, since it is larger than the sum of its proper divisors (23281921).

6857579128319 is a wasteful number, since it uses less digits than its factorization.

6857579128319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23281920.

The product of its digits is 228614400, while the sum is 71.

The spelling of 6857579128319 in words is "six trillion, eight hundred fifty-seven billion, five hundred seventy-nine million, one hundred twenty-eight thousand, three hundred nineteen".