12546166433 has 4 divisors (see below), whose sum is σ = 12547289280. Its totient is φ = 12545043588.

The previous prime is 12546166397. The next prime is 12546166463. The reversal of 12546166433 is 33466164521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12546166433 - 2¹⁸ = 12545904289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12546166463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544493 + ... + 567066.

It is an arithmetic number, because the mean of its divisors is an integer number (3136822320).

Almost surely, 2^12546166433 is an apocalyptic number.

It is an amenable number.

12546166433 is a deficient number, since it is larger than the sum of its proper divisors (1122847).

12546166433 is a wasteful number, since it uses less digits than its factorization.

12546166433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122846.

The product of its digits is 311040, while the sum is 41.

The spelling of 12546166433 in words is "twelve billion, five hundred forty-six million, one hundred sixty-six thousand, four hundred thirty-three".