8386778880 has 360 divisors, whose sum is σ = 31323089952. Its totient is φ = 2138628096.

The previous prime is 8386778879. The next prime is 8386778893. The reversal of 8386778880 is 888776838.

It is a tau number, because it is divible by the number of its divisors (360).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2382882 + ... + 2386398.

Almost surely, 2^8386778880 is an apocalyptic number.

8386778880 is a gapful number since it is divisible by the number (80) 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 8386778880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15661544976).

8386778880 is an abundant number, since it is smaller than the sum of its proper divisors (22936311072).

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

8386778880 is a wasteful number, since it uses less digits than its factorization.

8386778880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The square root of 8386778880 is about 91579.3583729434. The cubic root of 8386778880 is about 2031.7256537461.

The spelling of 8386778880 in words is "eight billion, three hundred eighty-six million, seven hundred seventy-eight thousand, eight hundred eighty".