6881644411 has 4 divisors (see below), whose sum is σ = 6882092152. Its totient is φ = 6881196672.

The previous prime is 6881644369. The next prime is 6881644433. The reversal of 6881644411 is 1144461886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1144461886 = 2 ⋅572230943.

It is a cyclic number.

It is not a de Polignac number, because 6881644411 - 2⁷ = 6881644283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6881644711) 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, 199965 + ... + 231838.

It is an arithmetic number, because the mean of its divisors is an integer number (1720523038).

Almost surely, 2^6881644411 is an apocalyptic number.

6881644411 is a deficient number, since it is larger than the sum of its proper divisors (447741).

6881644411 is a wasteful number, since it uses less digits than its factorization.

6881644411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447740.

The product of its digits is 147456, while the sum is 43.

The square root of 6881644411 is about 82955.6773885911. The cubic root of 6881644411 is about 1902.0885999138.

The spelling of 6881644411 in words is "six billion, eight hundred eighty-one million, six hundred forty-four thousand, four hundred eleven".