779165847973 has 2 divisors, whose sum is σ = 779165847974. Its totient is φ = 779165847972.

The previous prime is 779165847917. The next prime is 779165847997. The reversal of 779165847973 is 379748561977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 721305394209 + 57860453764 = 849297^2 + 240542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779165847973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 779165847896 and 779165847905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779165845973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389582923986 + 389582923987.

It is an arithmetic number, because the mean of its divisors is an integer number (389582923987).

Almost surely, 2^779165847973 is an apocalyptic number.

It is an amenable number.

779165847973 is a deficient number, since it is larger than the sum of its proper divisors (1).

779165847973 is an equidigital number, since it uses as much as digits as its factorization.

779165847973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560105280, while the sum is 73.

The spelling of 779165847973 in words is "seven hundred seventy-nine billion, one hundred sixty-five million, eight hundred forty-seven thousand, nine hundred seventy-three".