12606557078 has 16 divisors (see below), whose sum is σ = 19353090240. Its totient is φ = 6155579976.

The previous prime is 12606557063. The next prime is 12606557087. The reversal of 12606557078 is 87075560621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670733 + ... + 689271.

It is an arithmetic number, because the mean of its divisors is an integer number (1209568140).

Almost surely, 2^12606557078 is an apocalyptic number.

12606557078 is a deficient number, since it is larger than the sum of its proper divisors (6746533162).

12606557078 is a wasteful number, since it uses less digits than its factorization.

12606557078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26491.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 12606557078 in words is "twelve billion, six hundred six million, five hundred fifty-seven thousand, seventy-eight".