779111881663 has 2 divisors, whose sum is σ = 779111881664. Its totient is φ = 779111881662.

The previous prime is 779111881631. The next prime is 779111881673. The reversal of 779111881663 is 366188111977.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (366188111977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 779111881663 - 2⁵ = 779111881631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 779111881598 and 779111881607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779111881673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389555940831 + 389555940832.

It is an arithmetic number, because the mean of its divisors is an integer number (389555940832).

Almost surely, 2^779111881663 is an apocalyptic number.

779111881663 is a deficient number, since it is larger than the sum of its proper divisors (1).

779111881663 is an equidigital number, since it uses as much as digits as its factorization.

779111881663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 58.

The spelling of 779111881663 in words is "seven hundred seventy-nine billion, one hundred eleven million, eight hundred eighty-one thousand, six hundred sixty-three".