791855853126787 has 2 divisors, whose sum is σ = 791855853126788. Its totient is φ = 791855853126786.

The previous prime is 791855853126733. The next prime is 791855853126847. The reversal of 791855853126787 is 787621358558197.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791855853126787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 791855853126787.

It is not a weakly prime, because it can be changed into another prime (791855853126727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395927926563393 + 395927926563394.

It is an arithmetic number, because the mean of its divisors is an integer number (395927926563394).

Almost surely, 2^{791855853126787} is an apocalyptic number.

791855853126787 is a deficient number, since it is larger than the sum of its proper divisors (1).

791855853126787 is an equidigital number, since it uses as much as digits as its factorization.

791855853126787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448000, while the sum is 82.

The spelling of 791855853126787 in words is "seven hundred ninety-one trillion, eight hundred fifty-five billion, eight hundred fifty-three million, one hundred twenty-six thousand, seven hundred eighty-seven".