6857218434 has 24 divisors (see below), whose sum is σ = 14962671792. Its totient is φ = 2077741120.

The previous prime is 6857218421. The next prime is 6857218463. The reversal of 6857218434 is 4348127586.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667642 + ... + 677834.

It is an arithmetic number, because the mean of its divisors is an integer number (623444658).

Almost surely, 2^6857218434 is an apocalyptic number.

6857218434 is an abundant number, since it is smaller than the sum of its proper divisors (8105453358).

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

6857218434 is an equidigital number, since it uses as much as digits as its factorization.

6857218434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20402 (or 10209 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 6857218434 is about 82808.3234584543. The cubic root of 6857218434 is about 1899.8354828928.

The spelling of 6857218434 in words is "six billion, eight hundred fifty-seven million, two hundred eighteen thousand, four hundred thirty-four".