799180777917 has 10 divisors (see below), whose sum is σ = 1193837952318. Its totient is φ = 532787185224.

The previous prime is 799180777903. The next prime is 799180777943. The reversal of 799180777917 is 719777081997.

It can be written as a sum of positive squares in only one way, i.e., 787814232921 + 11366544996 = 887589^2 + 106614^2 .

It is not a de Polignac number, because 799180777917 - 2¹⁰ = 799180776893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799180777517) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4933214598 + ... + 4933214759.

Almost surely, 2^799180777917 is an apocalyptic number.

It is an amenable number.

799180777917 is a deficient number, since it is larger than the sum of its proper divisors (394657174401).

799180777917 is an equidigital number, since it uses as much as digits as its factorization.

799180777917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9866429369 (or 9866429360 counting only the distinct ones).

The product of its (nonzero) digits is 98018424, while the sum is 72.

The spelling of 799180777917 in words is "seven hundred ninety-nine billion, one hundred eighty million, seven hundred seventy-seven thousand, nine hundred seventeen".