779966932869 has 6 divisors (see below), whose sum is σ = 1126618903046. Its totient is φ = 519977955240.

The previous prime is 779966932853. The next prime is 779966932873. The reversal of 779966932869 is 968239669977.

It can be written as a sum of positive squares in only one way, i.e., 496876961025 + 283089971844 = 704895^2 + 532062^2 .

It is not a de Polignac number, because 779966932869 - 2⁴ = 779966932853 is a prime.

It is a super-2 number, since 2×779966932869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779966932469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43331496262 + ... + 43331496279.

Almost surely, 2^779966932869 is an apocalyptic number.

It is an amenable number.

779966932869 is a deficient number, since it is larger than the sum of its proper divisors (346651970177).

779966932869 is a wasteful number, since it uses less digits than its factorization.

779966932869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86662992547 (or 86662992544 counting only the distinct ones).

The product of its digits is 3333197952, while the sum is 81.

The spelling of 779966932869 in words is "seven hundred seventy-nine billion, nine hundred sixty-six million, nine hundred thirty-two thousand, eight hundred sixty-nine".