12512809078 has 32 divisors (see below), whose sum is σ = 23407004160. Its totient is φ = 4873781760.

The previous prime is 12512809063. The next prime is 12512809121. The reversal of 12512809078 is 87090821521.

It is a happy number.

12512809078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 696918 + ... + 714646.

It is an arithmetic number, because the mean of its divisors is an integer number (731468880).

Almost surely, 2^12512809078 is an apocalyptic number.

12512809078 is a deficient number, since it is larger than the sum of its proper divisors (10894195082).

12512809078 is a wasteful number, since it uses less digits than its factorization.

12512809078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22332.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 12512809078 in words is "twelve billion, five hundred twelve million, eight hundred nine thousand, seventy-eight".