12895394489 has 4 divisors (see below), whose sum is σ = 13653947124. Its totient is φ = 12136841856.

The previous prime is 12895394443. The next prime is 12895394513. The reversal of 12895394489 is 98449359821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98449359821 = 17 ⋅5791138813.

It can be written as a sum of positive squares in 2 ways, for example, as 6381613225 + 6513781264 = 79885^2 + 80708^2 .

It is a cyclic number.

It is not a de Polignac number, because 12895394489 - 2²⁰ = 12894345913 is a prime.

It is a super-2 number, since 2×12895394489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12895394789) 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, 379276292 + ... + 379276325.

It is an arithmetic number, because the mean of its divisors is an integer number (3413486781).

Almost surely, 2^12895394489 is an apocalyptic number.

It is an amenable number.

12895394489 is a deficient number, since it is larger than the sum of its proper divisors (758552635).

12895394489 is an equidigital number, since it uses as much as digits as its factorization.

12895394489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758552634.

The product of its digits is 22394880, while the sum is 62.

The spelling of 12895394489 in words is "twelve billion, eight hundred ninety-five million, three hundred ninety-four thousand, four hundred eighty-nine".