6857959631388 has 24 divisors (see below), whose sum is σ = 16002099790992. Its totient is φ = 2285958831744.

The previous prime is 6857959631317. The next prime is 6857959631389. The reversal of 6857959631388 is 8831369597586.

It is a super-2 number, since 2×6857959631388² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857959631389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420295 + ... + 4424222.

It is an arithmetic number, because the mean of its divisors is an integer number (666754157958).

Almost surely, 2^{6857959631388} is an apocalyptic number.

It is an amenable number.

6857959631388 is an abundant number, since it is smaller than the sum of its proper divisors (9144140159604).

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

6857959631388 is a wasteful number, since it uses less digits than its factorization.

6857959631388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6928021 (or 6928019 counting only the distinct ones).

The product of its digits is 2351462400, while the sum is 78.

The spelling of 6857959631388 in words is "six trillion, eight hundred fifty-seven billion, nine hundred fifty-nine million, six hundred thirty-one thousand, three hundred eighty-eight".