6881180399 has 4 divisors (see below), whose sum is σ = 6949311000. Its totient is φ = 6813049800.

The previous prime is 6881180387. The next prime is 6881180419. The reversal of 6881180399 is 9930811886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6881180399 - 2²⁰ = 6880131823 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 6881180399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881180309) 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, 34065149 + ... + 34065350.

It is an arithmetic number, because the mean of its divisors is an integer number (1737327750).

Almost surely, 2^6881180399 is an apocalyptic number.

6881180399 is a deficient number, since it is larger than the sum of its proper divisors (68130601).

6881180399 is a wasteful number, since it uses less digits than its factorization.

6881180399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68130600.

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 6881180399 is about 82952.8805949498. The cubic root of 6881180399 is about 1902.0458479338.

The spelling of 6881180399 in words is "six billion, eight hundred eighty-one million, one hundred eighty thousand, three hundred ninety-nine".