78085766346 has 64 divisors (see below), whose sum is σ = 181615343616. Its totient is φ = 21920673600.

The previous prime is 78085766327. The next prime is 78085766371. The reversal of 78085766346 is 64366758087.

It is a self number, because there is not a number n which added to its sum of digits gives 78085766346.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 829041 + ... + 918411.

It is an arithmetic number, because the mean of its divisors is an integer number (2837739744).

Almost surely, 2^78085766346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78085766346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90807671808).

78085766346 is an abundant number, since it is smaller than the sum of its proper divisors (103529577270).

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

78085766346 is a wasteful number, since it uses less digits than its factorization.

78085766346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89747.

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 78085766346 in words is "seventy-eight billion, eighty-five million, seven hundred sixty-six thousand, three hundred forty-six".