12443039591 has 2 divisors, whose sum is σ = 12443039592. Its totient is φ = 12443039590.

The previous prime is 12443039569. The next prime is 12443039597. The reversal of 12443039591 is 19593034421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12443039591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12443039597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221519795 + 6221519796.

It is an arithmetic number, because the mean of its divisors is an integer number (6221519796).

Almost surely, 2^12443039591 is an apocalyptic number.

12443039591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12443039591 is an equidigital number, since it uses as much as digits as its factorization.

12443039591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 12443039591 in words is "twelve billion, four hundred forty-three million, thirty-nine thousand, five hundred ninety-one".