78585873016 has 32 divisors (see below), whose sum is σ = 168408576000. Its totient is φ = 33677604576.

The previous prime is 78585872947. The next prime is 78585873019. The reversal of 78585873016 is 61037858587.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78585873019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204645 + ... + 1268203.

It is an arithmetic number, because the mean of its divisors is an integer number (5262768000).

Almost surely, 2^78585873016 is an apocalyptic number.

It is an amenable number.

78585873016 is an abundant number, since it is smaller than the sum of its proper divisors (89822702984).

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

78585873016 is a wasteful number, since it uses less digits than its factorization.

78585873016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85651 (or 85647 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 78585873016 in words is "seventy-eight billion, five hundred eighty-five million, eight hundred seventy-three thousand, sixteen".