12545442032 has 20 divisors (see below), whose sum is σ = 24599649480. Its totient is φ = 6197145408.

The previous prime is 12545442029. The next prime is 12545442061. The reversal of 12545442032 is 23024454521.

It is a self number, because there is not a number n which added to its sum of digits gives 12545442032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722107 + ... + 4724762.

It is an arithmetic number, because the mean of its divisors is an integer number (1229982474).

Almost surely, 2^12545442032 is an apocalyptic number.

It is an amenable number.

12545442032 is a deficient number, since it is larger than the sum of its proper divisors (12054207448).

12545442032 is an equidigital number, since it uses as much as digits as its factorization.

12545442032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446960 (or 9446954 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 12545442032 its reverse (23024454521), we get a palindrome (35569896553).

The spelling of 12545442032 in words is "twelve billion, five hundred forty-five million, four hundred forty-two thousand, thirty-two".