779202985261 has 2 divisors, whose sum is σ = 779202985262. Its totient is φ = 779202985260.

The previous prime is 779202985241. The next prime is 779202985271. The reversal of 779202985261 is 162589202977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567355432900 + 211847552361 = 753230^2 + 460269^2 .

It is a cyclic number.

It is not a de Polignac number, because 779202985261 - 2¹⁷ = 779202854189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 779202985196 and 779202985205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779202985241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389601492630 + 389601492631.

It is an arithmetic number, because the mean of its divisors is an integer number (389601492631).

Almost surely, 2^779202985261 is an apocalyptic number.

It is an amenable number.

779202985261 is a deficient number, since it is larger than the sum of its proper divisors (1).

779202985261 is an equidigital number, since it uses as much as digits as its factorization.

779202985261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 779202985261 in words is "seven hundred seventy-nine billion, two hundred two million, nine hundred eighty-five thousand, two hundred sixty-one".