12506566017 has 32 divisors (see below), whose sum is σ = 18343428480. Its totient is φ = 7516651520.

The previous prime is 12506565983. The next prime is 12506566027. The reversal of 12506566017 is 71066560521.

It is a cyclic number.

It is not a de Polignac number, because 12506566017 - 2¹⁴ = 12506549633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12506566027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1972909 + ... + 1979237.

It is an arithmetic number, because the mean of its divisors is an integer number (573232140).

Almost surely, 2^12506566017 is an apocalyptic number.

It is an amenable number.

12506566017 is a deficient number, since it is larger than the sum of its proper divisors (5836862463).

12506566017 is a wasteful number, since it uses less digits than its factorization.

12506566017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 12506566017 in words is "twelve billion, five hundred six million, five hundred sixty-six thousand, seventeen".