7875115788 has 12 divisors (see below), whose sum is σ = 18375270200. Its totient is φ = 2625038592.

The previous prime is 7875115771. The next prime is 7875115841. The reversal of 7875115788 is 8875115787.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328129813 + ... + 328129836.

Almost surely, 2^7875115788 is an apocalyptic number.

It is an amenable number.

7875115788 is an abundant number, since it is smaller than the sum of its proper divisors (10500154412).

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

7875115788 is a wasteful number, since it uses less digits than its factorization.

7875115788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656259656 (or 656259654 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 57.

The square root of 7875115788 is about 88741.8491355685. The cubic root of 7875115788 is about 1989.5383547380.

Subtracting 7875115788 from its reverse (8875115787), we obtain a palindrome (999999999).

The spelling of 7875115788 in words is "seven billion, eight hundred seventy-five million, one hundred fifteen thousand, seven hundred eighty-eight".