78847789200 has 120 divisors (see below), whose sum is σ = 252844450848. Its totient is φ = 21003709440.

The previous prime is 78847789193. The next prime is 78847789211. The reversal of 78847789200 is 298774887.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1109127 + ... + 1178073.

Almost surely, 2^78847789200 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 78847789200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126422225424).

78847789200 is an abundant number, since it is smaller than the sum of its proper divisors (173996661648).

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

78847789200 is a wasteful number, since it uses less digits than its factorization.

78847789200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69921 (or 69910 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 60.

The spelling of 78847789200 in words is "seventy-eight billion, eight hundred forty-seven million, seven hundred eighty-nine thousand, two hundred".