6857826931406 has 48 divisors (see below), whose sum is σ = 12003835979520. Its totient is φ = 2912322650160.

The previous prime is 6857826931391. The next prime is 6857826931409. The reversal of 6857826931406 is 6041396287586.

It is a super-2 number, since 2×6857826931406² (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 (6857826931409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6351446 + ... + 7352313.

It is an arithmetic number, because the mean of its divisors is an integer number (250079916240).

It is a 1-persistent number, because it is pandigital, but 2⋅6857826931406 = 13715653862812 is not.

Almost surely, 2^{6857826931406} is an apocalyptic number.

6857826931406 is a deficient number, since it is larger than the sum of its proper divisors (5146009048114).

6857826931406 is a wasteful number, since it uses less digits than its factorization.

6857826931406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703861 (or 13703838 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 6857826931406 in words is "six trillion, eight hundred fifty-seven billion, eight hundred twenty-six million, nine hundred thirty-one thousand, four hundred six".