12440310443 has 12 divisors (see below), whose sum is σ = 13705266960. Its totient is φ = 11283563280.

The previous prime is 12440310413. The next prime is 12440310461. The reversal of 12440310443 is 34401304421.

It is not a de Polignac number, because 12440310443 - 2⁸ = 12440310187 is a prime.

It is a super-2 number, since 2×12440310443² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12440310413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63980 + ... + 170217.

It is an arithmetic number, because the mean of its divisors is an integer number (1142105580).

Almost surely, 2^12440310443 is an apocalyptic number.

12440310443 is a deficient number, since it is larger than the sum of its proper divisors (1264956517).

12440310443 is a wasteful number, since it uses less digits than its factorization.

12440310443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234658 (or 234647 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12440310443 its reverse (34401304421), we get a palindrome (46841614864).

The spelling of 12440310443 in words is "twelve billion, four hundred forty million, three hundred ten thousand, four hundred forty-three".