779544065473 has 2 divisors, whose sum is σ = 779544065474. Its totient is φ = 779544065472.

The previous prime is 779544065431. The next prime is 779544065507. The reversal of 779544065473 is 374560445977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412802395009 + 366741670464 = 642497^2 + 605592^2 .

It is a cyclic number.

It is not a de Polignac number, because 779544065473 - 2²¹ = 779541968321 is a prime.

It is not a weakly prime, because it can be changed into another prime (779544065413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389772032736 + 389772032737.

It is an arithmetic number, because the mean of its divisors is an integer number (389772032737).

Almost surely, 2^779544065473 is an apocalyptic number.

It is an amenable number.

779544065473 is a deficient number, since it is larger than the sum of its proper divisors (1).

779544065473 is an equidigital number, since it uses as much as digits as its factorization.

779544065473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88905600, while the sum is 61.

The spelling of 779544065473 in words is "seven hundred seventy-nine billion, five hundred forty-four million, sixty-five thousand, four hundred seventy-three".