779405552881 has 2 divisors, whose sum is σ = 779405552882. Its totient is φ = 779405552880.

The previous prime is 779405552839. The next prime is 779405552923. The reversal of 779405552881 is 188255504977.

It is a balanced prime because it is at equal distance from previous prime (779405552839) and next prime (779405552923).

It can be written as a sum of positive squares in only one way, i.e., 622418434225 + 156987118656 = 788935^2 + 396216^2 .

It is a cyclic number.

It is not a de Polignac number, because 779405552881 - 2⁷ = 779405552753 is a prime.

It is a super-2 number, since 2×779405552881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (779405652881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389702776440 + 389702776441.

It is an arithmetic number, because the mean of its divisors is an integer number (389702776441).

Almost surely, 2^779405552881 is an apocalyptic number.

It is an amenable number.

779405552881 is a deficient number, since it is larger than the sum of its proper divisors (1).

779405552881 is an equidigital number, since it uses as much as digits as its factorization.

779405552881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224000, while the sum is 61.

The spelling of 779405552881 in words is "seven hundred seventy-nine billion, four hundred five million, five hundred fifty-two thousand, eight hundred eighty-one".