12118143449 has 2 divisors, whose sum is σ = 12118143450. Its totient is φ = 12118143448.

The previous prime is 12118143419. The next prime is 12118143463. The reversal of 12118143449 is 94434181121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6486691600 + 5631451849 = 80540^2 + 75043^2 .

It is a cyclic number.

It is not a de Polignac number, because 12118143449 - 2¹² = 12118139353 is a prime.

It is not a weakly prime, because it can be changed into another prime (12118143419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059071724 + 6059071725.

It is an arithmetic number, because the mean of its divisors is an integer number (6059071725).

Almost surely, 2^12118143449 is an apocalyptic number.

It is an amenable number.

12118143449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12118143449 is an equidigital number, since it uses as much as digits as its factorization.

12118143449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The spelling of 12118143449 in words is "twelve billion, one hundred eighteen million, one hundred forty-three thousand, four hundred forty-nine".