768783500791 has 2 divisors, whose sum is σ = 768783500792. Its totient is φ = 768783500790.

The previous prime is 768783500789. The next prime is 768783500827. The reversal of 768783500791 is 197005387867.

It is a weak prime.

It is an emirp because it is prime and its reverse (197005387867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 768783500791 - 2¹ = 768783500789 is a prime.

Together with 768783500789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768783500701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384391750395 + 384391750396.

It is an arithmetic number, because the mean of its divisors is an integer number (384391750396).

Almost surely, 2^768783500791 is an apocalyptic number.

768783500791 is a deficient number, since it is larger than the sum of its proper divisors (1).

768783500791 is an equidigital number, since it uses as much as digits as its factorization.

768783500791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 768783500791 in words is "seven hundred sixty-eight billion, seven hundred eighty-three million, five hundred thousand, seven hundred ninety-one".