12443452534 has 4 divisors (see below), whose sum is σ = 18665178804. Its totient is φ = 6221726266.

The previous prime is 12443452517. The next prime is 12443452547. The reversal of 12443452534 is 43525434421.

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

It is a super-2 number, since 2×12443452534² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12443452493 and 12443452502.

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, 3110863132 + ... + 3110863135.

It is an arithmetic number, because the mean of its divisors is an integer number (4666294701).

Almost surely, 2^12443452534 is an apocalyptic number.

12443452534 is a deficient number, since it is larger than the sum of its proper divisors (6221726270).

12443452534 is an equidigital number, since it uses as much as digits as its factorization.

12443452534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6221726269.

The product of its digits is 230400, while the sum is 37.

Adding to 12443452534 its reverse (43525434421), we get a palindrome (55968886955).

The spelling of 12443452534 in words is "twelve billion, four hundred forty-three million, four hundred fifty-two thousand, five hundred thirty-four".