12845514457 has 4 divisors (see below), whose sum is σ = 12863839716. Its totient is φ = 12827189200.

The previous prime is 12845514443. The next prime is 12845514463. The reversal of 12845514457 is 75441554821.

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 10080963216 + 2764551241 = 100404^2 + 52579^2 .

It is a cyclic number.

It is not a de Polignac number, because 12845514457 - 2¹⁵ = 12845481689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12845514427) 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, 9161578 + ... + 9162979.

It is an arithmetic number, because the mean of its divisors is an integer number (3215959929).

Almost surely, 2^12845514457 is an apocalyptic number.

It is an amenable number.

12845514457 is a deficient number, since it is larger than the sum of its proper divisors (18325259).

12845514457 is an equidigital number, since it uses as much as digits as its factorization.

12845514457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18325258.

The product of its digits is 896000, while the sum is 46.

The spelling of 12845514457 in words is "twelve billion, eight hundred forty-five million, five hundred fourteen thousand, four hundred fifty-seven".