765967340891 has 2 divisors, whose sum is σ = 765967340892. Its totient is φ = 765967340890.

The previous prime is 765967340867. The next prime is 765967340893. The reversal of 765967340891 is 198043769567.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765967340891 is a prime.

Together with 765967340893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (765967340893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382983670445 + 382983670446.

It is an arithmetic number, because the mean of its divisors is an integer number (382983670446).

Almost surely, 2^765967340891 is an apocalyptic number.

765967340891 is a deficient number, since it is larger than the sum of its proper divisors (1).

765967340891 is an equidigital number, since it uses as much as digits as its factorization.

765967340891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 765967340891 in words is "seven hundred sixty-five billion, nine hundred sixty-seven million, three hundred forty thousand, eight hundred ninety-one".