12437404338 has 16 divisors (see below), whose sum is σ = 24953281920. Its totient is φ = 4132722576.

The previous prime is 12437404337. The next prime is 12437404349. The reversal of 12437404338 is 83340473421.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12437404296 and 12437404305.

It is not an unprimeable number, because it can be changed into a prime (12437404337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267658 + ... + 3271461.

It is an arithmetic number, because the mean of its divisors is an integer number (1559580120).

Almost surely, 2^12437404338 is an apocalyptic number.

12437404338 is an abundant number, since it is smaller than the sum of its proper divisors (12515877582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12437404338 is a wasteful number, since it uses less digits than its factorization.

12437404338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539441.

The product of its (nonzero) digits is 193536, while the sum is 39.

Adding to 12437404338 its reverse (83340473421), we get a palindrome (95777877759).

The spelling of 12437404338 in words is "twelve billion, four hundred thirty-seven million, four hundred four thousand, three hundred thirty-eight".