78012856830 has 64 divisors (see below), whose sum is σ = 192604495680. Its totient is φ = 20208190464.

The previous prime is 78012856829. The next prime is 78012856913. The reversal of 78012856830 is 3865821087.

It is a self number, because there is not a number n which added to its sum of digits gives 78012856830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627916 + ... + 741824.

It is an arithmetic number, because the mean of its divisors is an integer number (3009445245).

Almost surely, 2^78012856830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78012856830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96302247840).

78012856830 is an abundant number, since it is smaller than the sum of its proper divisors (114591638850).

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

78012856830 is a wasteful number, since it uses less digits than its factorization.

78012856830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114573.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 78012856830 in words is "seventy-eight billion, twelve million, eight hundred fifty-six thousand, eight hundred thirty".