78469386317 has 16 divisors (see below), whose sum is σ = 92494213632. Its totient is φ = 65176627200.

The previous prime is 78469386313. The next prime is 78469386323. The reversal of 78469386317 is 71368396487.

It is a cyclic number.

It is not a de Polignac number, because 78469386317 - 2² = 78469386313 is a prime.

It is a super-4 number, since 4×78469386317⁴ (a number of 45 digits) contains 4444 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 78469386317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78469386313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147508 + ... + 1213965.

It is an arithmetic number, because the mean of its divisors is an integer number (5780888352).

Almost surely, 2^78469386317 is an apocalyptic number.

It is an amenable number.

78469386317 is a deficient number, since it is larger than the sum of its proper divisors (14024827315).

78469386317 is a wasteful number, since it uses less digits than its factorization.

78469386317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361628.

The product of its digits is 36578304, while the sum is 62.

The spelling of 78469386317 in words is "seventy-eight billion, four hundred sixty-nine million, three hundred eighty-six thousand, three hundred seventeen".