779852315797 has 2 divisors, whose sum is σ = 779852315798. Its totient is φ = 779852315796.

The previous prime is 779852315791. The next prime is 779852315833. The reversal of 779852315797 is 797513258977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700846911556 + 79005404241 = 837166^2 + 281079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779852315797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779852315791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389926157898 + 389926157899.

It is an arithmetic number, because the mean of its divisors is an integer number (389926157899).

Almost surely, 2^779852315797 is an apocalyptic number.

It is an amenable number.

779852315797 is a deficient number, since it is larger than the sum of its proper divisors (1).

779852315797 is an equidigital number, since it uses as much as digits as its factorization.

779852315797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233377200, while the sum is 70.

The spelling of 779852315797 in words is "seven hundred seventy-nine billion, eight hundred fifty-two million, three hundred fifteen thousand, seven hundred ninety-seven".