12989963257 has 4 divisors (see below), whose sum is σ = 12991191696. Its totient is φ = 12988734820.

The previous prime is 12989963221. The next prime is 12989963269. The reversal of 12989963257 is 75236998921.

12989963257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12989963257 - 2¹⁵ = 12989930489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12989963195 and 12989963204.

It is not an unprimeable number, because it can be changed into a prime (12989963557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598219 + ... + 619552.

It is an arithmetic number, because the mean of its divisors is an integer number (3247797924).

Almost surely, 2^12989963257 is an apocalyptic number.

It is an amenable number.

12989963257 is a deficient number, since it is larger than the sum of its proper divisors (1228439).

12989963257 is a wasteful number, since it uses less digits than its factorization.

12989963257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228438.

The product of its digits is 14696640, while the sum is 61.

The spelling of 12989963257 in words is "twelve billion, nine hundred eighty-nine million, nine hundred sixty-three thousand, two hundred fifty-seven".