12289626457 has 4 divisors (see below), whose sum is σ = 12289931280. Its totient is φ = 12289321636.

The previous prime is 12289626373. The next prime is 12289626469. The reversal of 12289626457 is 75462698221.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75462698221 = 19 ⋅3971720959.

It is a cyclic number.

It is not a de Polignac number, because 12289626457 - 2¹¹ = 12289624409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12289626157) 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, 80683 + ... + 176320.

It is an arithmetic number, because the mean of its divisors is an integer number (3072482820).

Almost surely, 2^12289626457 is an apocalyptic number.

It is an amenable number.

12289626457 is a deficient number, since it is larger than the sum of its proper divisors (304823).

12289626457 is an equidigital number, since it uses as much as digits as its factorization.

12289626457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304822.

The product of its digits is 2903040, while the sum is 52.

The spelling of 12289626457 in words is "twelve billion, two hundred eighty-nine million, six hundred twenty-six thousand, four hundred fifty-seven".