779065788947 has 2 divisors, whose sum is σ = 779065788948. Its totient is φ = 779065788946.

The previous prime is 779065788859. The next prime is 779065788953. The reversal of 779065788947 is 749887560977.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 779065788947 - 2⁸ = 779065788691 is a prime.

It is a super-2 number, since 2×779065788947² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (779065788047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389532894473 + 389532894474.

It is an arithmetic number, because the mean of its divisors is an integer number (389532894474).

Almost surely, 2^779065788947 is an apocalyptic number.

779065788947 is a deficient number, since it is larger than the sum of its proper divisors (1).

779065788947 is an equidigital number, since it uses as much as digits as its factorization.

779065788947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1493614080, while the sum is 77.

The spelling of 779065788947 in words is "seven hundred seventy-nine billion, sixty-five million, seven hundred eighty-eight thousand, nine hundred forty-seven".