6851540679 has 16 divisors (see below), whose sum is σ = 9688856064. Its totient is φ = 4297471200.

The previous prime is 6851540669. The next prime is 6851540687. The reversal of 6851540679 is 9760451586.

It is not a de Polignac number, because 6851540679 - 2¹⁶ = 6851475143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851540669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809707 + ... + 818124.

It is an arithmetic number, because the mean of its divisors is an integer number (605553504).

Almost surely, 2^6851540679 is an apocalyptic number.

6851540679 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6851540679 is a deficient number, since it is larger than the sum of its proper divisors (2837315385).

6851540679 is a wasteful number, since it uses less digits than its factorization.

6851540679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627918.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 6851540679 is about 82774.0338451619. The cubic root of 6851540679 is about 1899.3109855313.

The spelling of 6851540679 in words is "six billion, eight hundred fifty-one million, five hundred forty thousand, six hundred seventy-nine".