78899788800 has 1056 divisors, whose sum is σ = 346018329600. Its totient is φ = 17225809920.

The previous prime is 78899788783. The next prime is 78899788819. The reversal of 78899788800 is 888799887.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 111282846 + ... + 111283554.

Almost surely, 2^78899788800 is an apocalyptic number.

78899788800 is a gapful number since it is divisible by the number (70) 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 78899788800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173009164800).

78899788800 is an abundant number, since it is smaller than the sum of its proper divisors (267118540800).

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

78899788800 is a wasteful number, since it uses less digits than its factorization.

78899788800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 72.

The spelling of 78899788800 in words is "seventy-eight billion, eight hundred ninety-nine million, seven hundred eighty-eight thousand, eight hundred".