12443040511 has 16 divisors (see below), whose sum is σ = 14384592000. Its totient is φ = 10644544800.

The previous prime is 12443040487. The next prime is 12443040517. The reversal of 12443040511 is 11504034421.

It is not a de Polignac number, because 12443040511 - 2⁵ = 12443040479 is a prime.

It is a super-2 number, since 2×12443040511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443040517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168645 + ... + 230926.

It is an arithmetic number, because the mean of its divisors is an integer number (899037000).

Almost surely, 2^12443040511 is an apocalyptic number.

12443040511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12443040511 is a deficient number, since it is larger than the sum of its proper divisors (1941551489).

12443040511 is a wasteful number, since it uses less digits than its factorization.

12443040511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399750.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12443040511 its reverse (11504034421), we get a palindrome (23947074932).

The spelling of 12443040511 in words is "twelve billion, four hundred forty-three million, forty thousand, five hundred eleven".