6878753815691 has 2 divisors, whose sum is σ = 6878753815692. Its totient is φ = 6878753815690.

The previous prime is 6878753815643. The next prime is 6878753815721. The reversal of 6878753815691 is 1965183578786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6878753815691 - 2⁶ = 6878753815627 is a prime.

It is not a weakly prime, because it can be changed into another prime (6878753815621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439376907845 + 3439376907846.

It is an arithmetic number, because the mean of its divisors is an integer number (3439376907846).

Almost surely, 2^{6878753815691} is an apocalyptic number.

6878753815691 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878753815691 is an equidigital number, since it uses as much as digits as its factorization.

6878753815691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 609638400, while the sum is 74.

The spelling of 6878753815691 in words is "six trillion, eight hundred seventy-eight billion, seven hundred fifty-three million, eight hundred fifteen thousand, six hundred ninety-one".