6857216432 has 160 divisors (see below), whose sum is σ = 15663283200. Its totient is φ = 2875392000.

The previous prime is 6857216393. The next prime is 6857216447. The reversal of 6857216432 is 2346127586.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26681648 + ... + 26681904.

It is an arithmetic number, because the mean of its divisors is an integer number (97895520).

Almost surely, 2^6857216432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6857216432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7831641600).

6857216432 is an abundant number, since it is smaller than the sum of its proper divisors (8806066768).

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

6857216432 is a wasteful number, since it uses less digits than its factorization.

6857216432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 469 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 6857216432 is about 82808.3113702966. The cubic root of 6857216432 is about 1899.8352980039.

The spelling of 6857216432 in words is "six billion, eight hundred fifty-seven million, two hundred sixteen thousand, four hundred thirty-two".