12545388599 has 4 divisors (see below), whose sum is σ = 12545654736. Its totient is φ = 12545122464.

The previous prime is 12545388587. The next prime is 12545388607. The reversal of 12545388599 is 99588354521.

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

It is a cyclic number.

It is not a de Polignac number, because 12545388599 - 2²⁰ = 12544340023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545388539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41234 + ... + 163679.

It is an arithmetic number, because the mean of its divisors is an integer number (3136413684).

Almost surely, 2^12545388599 is an apocalyptic number.

12545388599 is a deficient number, since it is larger than the sum of its proper divisors (266137).

12545388599 is an equidigital number, since it uses as much as digits as its factorization.

12545388599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266136.

The product of its digits is 15552000, while the sum is 59.

The spelling of 12545388599 in words is "twelve billion, five hundred forty-five million, three hundred eighty-eight thousand, five hundred ninety-nine".