6881125139 has 32 divisors (see below), whose sum is σ = 8797432320. Its totient is φ = 5239531008.

The previous prime is 6881125123. The next prime is 6881125189. The reversal of 6881125139 is 9315211886.

6881125139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6881125139 - 2⁴ = 6881125123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6881125139.

It is not an unprimeable number, because it can be changed into a prime (6881125189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620804 + ... + 631790.

It is an arithmetic number, because the mean of its divisors is an integer number (274919760).

Almost surely, 2^6881125139 is an apocalyptic number.

6881125139 is a deficient number, since it is larger than the sum of its proper divisors (1916307181).

6881125139 is a wasteful number, since it uses less digits than its factorization.

6881125139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11307.

The product of its digits is 103680, while the sum is 44.

The square root of 6881125139 is about 82952.5475136237. The cubic root of 6881125139 is about 1902.0407563977.

The spelling of 6881125139 in words is "six billion, eight hundred eighty-one million, one hundred twenty-five thousand, one hundred thirty-nine".