12748970489 has 4 divisors (see below), whose sum is σ = 12989517156. Its totient is φ = 12508423824.

The previous prime is 12748970431. The next prime is 12748970491. The reversal of 12748970489 is 98407984721.

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 10399920400 + 2349050089 = 101980^2 + 48467^2 .

It is a cyclic number.

It is not a de Polignac number, because 12748970489 - 2¹² = 12748966393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12748970419) 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, 120273254 + ... + 120273359.

It is an arithmetic number, because the mean of its divisors is an integer number (3247379289).

Almost surely, 2^12748970489 is an apocalyptic number.

It is an amenable number.

12748970489 is a deficient number, since it is larger than the sum of its proper divisors (240546667).

12748970489 is an equidigital number, since it uses as much as digits as its factorization.

12748970489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240546666.

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 12748970489 in words is "twelve billion, seven hundred forty-eight million, nine hundred seventy thousand, four hundred eighty-nine".