12972912289 has 2 divisors, whose sum is σ = 12972912290. Its totient is φ = 12972912288.

The previous prime is 12972912269. The next prime is 12972912331. The reversal of 12972912289 is 98221927921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6499100689 + 6473811600 = 80617^2 + 80460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12972912289 - 2²³ = 12964523681 is a prime.

It is not a weakly prime, because it can be changed into another prime (12972912259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6486456144 + 6486456145.

It is an arithmetic number, because the mean of its divisors is an integer number (6486456145).

Almost surely, 2^12972912289 is an apocalyptic number.

It is an amenable number.

12972912289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12972912289 is an equidigital number, since it uses as much as digits as its factorization.

12972912289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 52.

The spelling of 12972912289 in words is "twelve billion, nine hundred seventy-two million, nine hundred twelve thousand, two hundred eighty-nine".