779116954687 has 2 divisors, whose sum is σ = 779116954688. Its totient is φ = 779116954686.

The previous prime is 779116954657. The next prime is 779116954757. The reversal of 779116954687 is 786459611977.

It is an a-pointer prime, because the next prime (779116954757) can be obtained adding 779116954687 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779116954687 is a prime.

It is a super-2 number, since 2×779116954687² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779116954657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389558477343 + 389558477344.

It is an arithmetic number, because the mean of its divisors is an integer number (389558477344).

Almost surely, 2^779116954687 is an apocalyptic number.

779116954687 is a deficient number, since it is larger than the sum of its proper divisors (1).

779116954687 is an equidigital number, since it uses as much as digits as its factorization.

779116954687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 70.

The spelling of 779116954687 in words is "seven hundred seventy-nine billion, one hundred sixteen million, nine hundred fifty-four thousand, six hundred eighty-seven".