12126516878 has 8 divisors (see below), whose sum is σ = 20788314672. Its totient is φ = 5197078656.

The previous prime is 12126516841. The next prime is 12126516881. The reversal of 12126516878 is 87861562121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433089875 + ... + 433089902.

It is an arithmetic number, because the mean of its divisors is an integer number (2598539334).

Almost surely, 2^12126516878 is an apocalyptic number.

12126516878 is a deficient number, since it is larger than the sum of its proper divisors (8661797794).

12126516878 is an equidigital number, since it uses as much as digits as its factorization.

12126516878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866179786.

The product of its digits is 322560, while the sum is 47.

The spelling of 12126516878 in words is "twelve billion, one hundred twenty-six million, five hundred sixteen thousand, eight hundred seventy-eight".