12543613606 has 4 divisors (see below), whose sum is σ = 18815420412. Its totient is φ = 6271806802.

The previous prime is 12543613567. The next prime is 12543613619. The reversal of 12543613606 is 60631634521.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3135903400 + ... + 3135903403.

It is an arithmetic number, because the mean of its divisors is an integer number (4703855103).

Almost surely, 2^12543613606 is an apocalyptic number.

12543613606 is a deficient number, since it is larger than the sum of its proper divisors (6271806806).

12543613606 is an equidigital number, since it uses as much as digits as its factorization.

12543613606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271806805.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 12543613606 in words is "twelve billion, five hundred forty-three million, six hundred thirteen thousand, six hundred six".