777775112617 has 12 divisors (see below), whose sum is σ = 820987951620. Its totient is φ = 736729346592.

The previous prime is 777775112447. The next prime is 777775112629. The reversal of 777775112617 is 716211577777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 246124139881 + 531650972736 = 496109^2 + 729144^2 .

It is not a de Polignac number, because 777775112617 - 2²⁷ = 777640894889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (777775712617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2307523 + ... + 2623015.

It is an arithmetic number, because the mean of its divisors is an integer number (68415662635).

Almost surely, 2^777775112617 is an apocalyptic number.

It is an amenable number.

777775112617 is a deficient number, since it is larger than the sum of its proper divisors (43212839003).

777775112617 is a wasteful number, since it uses less digits than its factorization.

777775112617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322360 (or 322341 counting only the distinct ones).

The product of its digits is 7058940, while the sum is 58.

The spelling of 777775112617 in words is "seven hundred seventy-seven billion, seven hundred seventy-five million, one hundred twelve thousand, six hundred seventeen".