6851845404 has 30 divisors (see below), whose sum is σ = 17912078184. Its totient is φ = 2283948360.

The previous prime is 6851845397. The next prime is 6851845409. The reversal of 6851845404 is 4045481586.

It is a happy number.

6851845404 is a `hidden beast` number, since 68 + 5 + 184 + 5 + 404 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6851845404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851845409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10573512 + ... + 10574159.

Almost surely, 2^6851845404 is an apocalyptic number.

It is an amenable number.

6851845404 is an abundant number, since it is smaller than the sum of its proper divisors (11060232780).

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

6851845404 is a wasteful number, since it uses less digits than its factorization.

6851845404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21147687 (or 21147676 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The square root of 6851845404 is about 82775.8745287538. The cubic root of 6851845404 is about 1899.3391426513.

The spelling of 6851845404 in words is "six billion, eight hundred fifty-one million, eight hundred forty-five thousand, four hundred four".