6881943812816 has 40 divisors (see below), whose sum is σ = 13534433437248. Its totient is φ = 3389279040000.

The previous prime is 6881943812791. The next prime is 6881943812839. The reversal of 6881943812816 is 6182183491886.

It is a super-2 number, since 2×6881943812816² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688105 + ... + 4075976.

Almost surely, 2^{6881943812816} is an apocalyptic number.

It is an amenable number.

6881943812816 is a deficient number, since it is larger than the sum of its proper divisors (6652489624432).

6881943812816 is a wasteful number, since it uses less digits than its factorization.

6881943812816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765211 (or 5765205 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 65.

The spelling of 6881943812816 in words is "six trillion, eight hundred eighty-one billion, nine hundred forty-three million, eight hundred twelve thousand, eight hundred sixteen".