78866208192 has 112 divisors (see below), whose sum is σ = 219463022592. Its totient is φ = 24960599040.

The previous prime is 78866208191. The next prime is 78866208193. The reversal of 78866208192 is 29180266887.

It is an interprime number because it is at equal distance from previous prime (78866208191) and next prime (78866208193).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78866208191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 190453 + ... + 440459.

Almost surely, 2^78866208192 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 78866208192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109731511296).

78866208192 is an abundant number, since it is smaller than the sum of its proper divisors (140596814400).

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

78866208192 is a wasteful number, since it uses less digits than its factorization.

78866208192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250106 (or 250096 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 78866208192 in words is "seventy-eight billion, eight hundred sixty-six million, two hundred eight thousand, one hundred ninety-two".