12423534360449 has 4 divisors (see below), whose sum is σ = 12423568183380. Its totient is φ = 12423500537520.

The previous prime is 12423534360439. The next prime is 12423534360499. The reversal of 12423534360449 is 94406343532421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6717971529025 + 5705562831424 = 2591905^2 + 2388632^2 .

It is a cyclic number.

It is not a de Polignac number, because 12423534360449 - 2²⁴ = 12423517583233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12423534360397 and 12423534360406.

It is not an unprimeable number, because it can be changed into a prime (12423534360409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16354382 + ... + 17097159.

It is an arithmetic number, because the mean of its divisors is an integer number (3105892045845).

Almost surely, 2^{12423534360449} is an apocalyptic number.

It is an amenable number.

12423534360449 is a deficient number, since it is larger than the sum of its proper divisors (33822931).

12423534360449 is an equidigital number, since it uses as much as digits as its factorization.

12423534360449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33822930.

The product of its (nonzero) digits is 7464960, while the sum is 50.

The spelling of 12423534360449 in words is "twelve trillion, four hundred twenty-three billion, five hundred thirty-four million, three hundred sixty thousand, four hundred forty-nine".