6858117859812 has 48 divisors (see below), whose sum is σ = 16944312551040. Its totient is φ = 2151474038272.

The previous prime is 6858117859793. The next prime is 6858117859871. The reversal of 6858117859812 is 2189587118586.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4122514 + ... + 5541782.

It is an arithmetic number, because the mean of its divisors is an integer number (353006511480).

Almost surely, 2^{6858117859812} is an apocalyptic number.

It is an amenable number.

6858117859812 is an abundant number, since it is smaller than the sum of its proper divisors (10086194691228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6858117859812 is a wasteful number, since it uses less digits than its factorization.

6858117859812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442980 (or 1442978 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 69.

The spelling of 6858117859812 in words is "six trillion, eight hundred fifty-eight billion, one hundred seventeen million, eight hundred fifty-nine thousand, eight hundred twelve".