78485792703816 has 128 divisors (see below), whose sum is σ = 203929018444800. Its totient is φ = 25153004701440.

The previous prime is 78485792703751. The next prime is 78485792703817. The reversal of 78485792703816 is 61830729758487.

It is not an unprimeable number, because it can be changed into a prime (78485792703817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90770646 + ... + 91631226.

It is an arithmetic number, because the mean of its divisors is an integer number (1593195456600).

It is a 2-persistent number, because it is pandigital, and so is 2⋅78485792703816 = 156971585407632, but 3⋅78485792703816 = 235457378111448 is not.

Almost surely, 2^{78485792703816} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78485792703816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101964509222400).

78485792703816 is an abundant number, since it is smaller than the sum of its proper divisors (125443225740984).

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

78485792703816 is a wasteful number, since it uses less digits than its factorization.

78485792703816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862019 (or 862015 counting only the distinct ones).

The product of its (nonzero) digits is 1137991680, while the sum is 75.

The spelling of 78485792703816 in words is "seventy-eight trillion, four hundred eighty-five billion, seven hundred ninety-two million, seven hundred three thousand, eight hundred sixteen".