8378878464 has 200 divisors, whose sum is σ = 27283753728. Its totient is φ = 2538915840.

The previous prime is 8378878441. The next prime is 8378878499. The reversal of 8378878464 is 4648788738.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 447009 + ... + 465375.

Almost surely, 2^8378878464 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 8378878464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13641876864).

8378878464 is an abundant number, since it is smaller than the sum of its proper divisors (18904875264).

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

8378878464 is a wasteful number, since it uses less digits than its factorization.

8378878464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18408 (or 18383 counting only the distinct ones).

The product of its digits is 57802752, while the sum is 63.

The square root of 8378878464 is about 91536.2139483604. The cubic root of 8378878464 is about 2031.0874857859.

The spelling of 8378878464 in words is "eight billion, three hundred seventy-eight million, eight hundred seventy-eight thousand, four hundred sixty-four".