6749695625891 has 2 divisors, whose sum is σ = 6749695625892. Its totient is φ = 6749695625890.

The previous prime is 6749695625851. The next prime is 6749695625909. The reversal of 6749695625891 is 1985265969476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6749695625891 - 2³⁸ = 6474817718947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6749695625851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3374847812945 + 3374847812946.

It is an arithmetic number, because the mean of its divisors is an integer number (3374847812946).

Almost surely, 2^{6749695625891} is an apocalyptic number.

6749695625891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6749695625891 is an equidigital number, since it uses as much as digits as its factorization.

6749695625891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1763596800, while the sum is 77.

The spelling of 6749695625891 in words is "six trillion, seven hundred forty-nine billion, six hundred ninety-five million, six hundred twenty-five thousand, eight hundred ninety-one".