6851437844 has 12 divisors (see below), whose sum is σ = 12376791168. Its totient is φ = 3315211800.

The previous prime is 6851437841. The next prime is 6851437847. The reversal of 6851437844 is 4487341586.

It is an interprime number because it is at equal distance from previous prime (6851437841) and next prime (6851437847).

It is a junction number, because it is equal to n+sod(n) for n = 6851437792 and 6851437801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851437841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27626642 + ... + 27626889.

It is an arithmetic number, because the mean of its divisors is an integer number (1031399264).

Almost surely, 2^6851437844 is an apocalyptic number.

It is an amenable number.

6851437844 is a deficient number, since it is larger than the sum of its proper divisors (5525353324).

6851437844 is a wasteful number, since it uses less digits than its factorization.

6851437844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55253566 (or 55253564 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The square root of 6851437844 is about 82773.4126637292. The cubic root of 6851437844 is about 1899.3014832100.

The spelling of 6851437844 in words is "six billion, eight hundred fifty-one million, four hundred thirty-seven thousand, eight hundred forty-four".