6881940140 has 12 divisors (see below), whose sum is σ = 14452074336. Its totient is φ = 2752776048.

The previous prime is 6881940137. The next prime is 6881940157. The reversal of 6881940140 is 410491886.

It is a super-2 number, since 2×6881940140² = 94722200181086439200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172048484 + ... + 172048523.

It is an arithmetic number, because the mean of its divisors is an integer number (1204339528).

Almost surely, 2^6881940140 is an apocalyptic number.

It is an amenable number.

6881940140 is an abundant number, since it is smaller than the sum of its proper divisors (7570134196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6881940140 is a wasteful number, since it uses less digits than its factorization.

6881940140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344097016 (or 344097014 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 6881940140 is about 82957.4598212843. The cubic root of 6881940140 is about 1902.1158460519.

The spelling of 6881940140 in words is "six billion, eight hundred eighty-one million, nine hundred forty thousand, one hundred forty".