78713030317 has 6 divisors (see below), whose sum is σ = 79217925134. Its totient is φ = 78208180440.

The previous prime is 78713030309. The next prime is 78713030447. The reversal of 78713030317 is 71303031787.

It can be written as a sum of positive squares in only one way, i.e., 60664182601 + 18048847716 = 246301^2 + 134346^2 .

It is not a de Polignac number, because 78713030317 - 2³ = 78713030309 is a prime.

It is a super-2 number, since 2×78713030317² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78713030317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78713031317) 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, 3504192 + ... + 3526582.

Almost surely, 2^78713030317 is an apocalyptic number.

It is an amenable number.

78713030317 is a deficient number, since it is larger than the sum of its proper divisors (504894817).

78713030317 is an frugal number, since it uses more digits than its factorization.

78713030317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44939 (or 22548 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The spelling of 78713030317 in words is "seventy-eight billion, seven hundred thirteen million, thirty thousand, three hundred seventeen".