12489531353 has 4 divisors (see below), whose sum is σ = 13450264548. Its totient is φ = 11528798160.

The previous prime is 12489531347. The next prime is 12489531367. The reversal of 12489531353 is 35313598421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35313598421 = 27919 ⋅1264859.

It can be written as a sum of positive squares in 2 ways, for example, as 5248712704 + 7240818649 = 72448^2 + 85093^2 .

It is a cyclic number.

It is not a de Polignac number, because 12489531353 - 2¹⁰ = 12489530329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12489530353) 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, 480366578 + ... + 480366603.

It is an arithmetic number, because the mean of its divisors is an integer number (3362566137).

Almost surely, 2^12489531353 is an apocalyptic number.

12489531353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12489531353 is a deficient number, since it is larger than the sum of its proper divisors (960733195).

12489531353 is an equidigital number, since it uses as much as digits as its factorization.

12489531353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960733194.

The product of its digits is 388800, while the sum is 44.

The spelling of 12489531353 in words is "twelve billion, four hundred eighty-nine million, five hundred thirty-one thousand, three hundred fifty-three".