78317468216 has 16 divisors (see below), whose sum is σ = 158141041800. Its totient is φ = 36146523744.

The previous prime is 78317468213. The next prime is 78317468221. The reversal of 78317468216 is 61286471387.

It is a happy number.

It is a super-2 number, since 2×78317468216² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78317468213) 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 3 ways as a sum of consecutive naturals, for example, 376526186 + ... + 376526393.

Almost surely, 2^78317468216 is an apocalyptic number.

It is an amenable number.

78317468216 is an abundant number, since it is smaller than the sum of its proper divisors (79823573584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78317468216 is a wasteful number, since it uses less digits than its factorization.

78317468216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753052598 (or 753052594 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The spelling of 78317468216 in words is "seventy-eight billion, three hundred seventeen million, four hundred sixty-eight thousand, two hundred sixteen".