12666050005 has 64 divisors (see below), whose sum is σ = 19081059840. Its totient is φ = 7869947904.

The previous prime is 12666049969. The next prime is 12666050051. The reversal of 12666050005 is 50005066621.

It is not a de Polignac number, because 12666050005 - 2¹⁷ = 12665918933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7643137 + ... + 7644793.

It is an arithmetic number, because the mean of its divisors is an integer number (298141560).

Almost surely, 2^12666050005 is an apocalyptic number.

It is an amenable number.

12666050005 is a deficient number, since it is larger than the sum of its proper divisors (6415009835).

12666050005 is a wasteful number, since it uses less digits than its factorization.

12666050005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 12666050005 in words is "twelve billion, six hundred sixty-six million, fifty thousand, five".