12530442319 has 4 divisors (see below), whose sum is σ = 12562005544. Its totient is φ = 12498879096.

The previous prime is 12530442317. The next prime is 12530442349. The reversal of 12530442319 is 91324403521.

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

It is a cyclic number.

It is not a de Polignac number, because 12530442319 - 2¹ = 12530442317 is a prime.

It is a super-2 number, since 2×12530442319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530442317) 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, 15781017 + ... + 15781810.

It is an arithmetic number, because the mean of its divisors is an integer number (3140501386).

Almost surely, 2^12530442319 is an apocalyptic number.

12530442319 is a deficient number, since it is larger than the sum of its proper divisors (31563225).

12530442319 is an equidigital number, since it uses as much as digits as its factorization.

12530442319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31563224.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 12530442319 in words is "twelve billion, five hundred thirty million, four hundred forty-two thousand, three hundred nineteen".