7808778472 has 64 divisors (see below), whose sum is σ = 16086859200. Its totient is φ = 3524144640.

The previous prime is 7808778433. The next prime is 7808778473. The reversal of 7808778472 is 2748778087.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7808778473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13723404 + ... + 13723972.

It is an arithmetic number, because the mean of its divisors is an integer number (251357175).

Almost surely, 2^7808778472 is an apocalyptic number.

It is an amenable number.

7808778472 is an abundant number, since it is smaller than the sum of its proper divisors (8278080728).

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

7808778472 is a wasteful number, since it uses less digits than its factorization.

7808778472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 9834496, while the sum is 58.

The square root of 7808778472 is about 88367.2929991634. The cubic root of 7808778472 is about 1983.9361951873.

The spelling of 7808778472 in words is "seven billion, eight hundred eight million, seven hundred seventy-eight thousand, four hundred seventy-two".