12743442523 has 4 divisors (see below), whose sum is σ = 14563934320. Its totient is φ = 10922950728.

The previous prime is 12743442493. The next prime is 12743442541. The reversal of 12743442523 is 32524434721.

12743442523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12743442523 - 2⁹ = 12743442011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12743442563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910245888 + ... + 910245901.

It is an arithmetic number, because the mean of its divisors is an integer number (3640983580).

Almost surely, 2^12743442523 is an apocalyptic number.

12743442523 is a deficient number, since it is larger than the sum of its proper divisors (1820491797).

12743442523 is an equidigital number, since it uses as much as digits as its factorization.

12743442523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820491796.

The product of its digits is 161280, while the sum is 37.

The spelling of 12743442523 in words is "twelve billion, seven hundred forty-three million, four hundred forty-two thousand, five hundred twenty-three".