78582819312 has 120 divisors (see below), whose sum is σ = 227229751008. Its totient is φ = 25337894400.

The previous prime is 78582819251. The next prime is 78582819319. The reversal of 78582819312 is 21391828587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78582819319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469362 + ... + 614382.

Almost surely, 2^78582819312 is an apocalyptic number.

78582819312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78582819312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113614875504).

78582819312 is an abundant number, since it is smaller than the sum of its proper divisors (148646931696).

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

78582819312 is a wasteful number, since it uses less digits than its factorization.

78582819312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145159 (or 145150 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 78582819312 in words is "seventy-eight billion, five hundred eighty-two million, eight hundred nineteen thousand, three hundred twelve".