12604542878 has 4 divisors (see below), whose sum is σ = 18906814320. Its totient is φ = 6302271438.

The previous prime is 12604542859. The next prime is 12604542893. The reversal of 12604542878 is 87824540621.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3151135718 + ... + 3151135721.

It is an arithmetic number, because the mean of its divisors is an integer number (4726703580).

Almost surely, 2^12604542878 is an apocalyptic number.

12604542878 is a deficient number, since it is larger than the sum of its proper divisors (6302271442).

12604542878 is an equidigital number, since it uses as much as digits as its factorization.

12604542878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6302271441.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 12604542878 in words is "twelve billion, six hundred four million, five hundred forty-two thousand, eight hundred seventy-eight".