7788878580 has 192 divisors, whose sum is σ = 25880279040. Its totient is φ = 1712503296.

The previous prime is 7788878567. The next prime is 7788878599. The reversal of 7788878580 is 858788877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3738219 + ... + 3740301.

It is an arithmetic number, because the mean of its divisors is an integer number (134793120).

Almost surely, 2^7788878580 is an apocalyptic number.

7788878580 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 7788878580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12940139520).

7788878580 is an abundant number, since it is smaller than the sum of its proper divisors (18091400460).

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

7788878580 is a wasteful number, since it uses less digits than its factorization.

7788878580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 56197120, while the sum is 66.

The square root of 7788878580 is about 88254.6235616016. The cubic root of 7788878580 is about 1982.2494738148.

The spelling of 7788878580 in words is "seven billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, five hundred eighty".