12814885217 has 18 divisors (see below), whose sum is σ = 13609556982. Its totient is φ = 12064840704.

The previous prime is 12814885207. The next prime is 12814885231. The reversal of 12814885217 is 71258841821.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 81793936 + 12733091281 = 9044^2 + 112841^2 .

It is not a de Polignac number, because 12814885217 - 2⁴ = 12814885201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12814885207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13446413 + ... + 13447365.

It is an arithmetic number, because the mean of its divisors is an integer number (756086499).

Almost surely, 2^12814885217 is an apocalyptic number.

It is an amenable number.

12814885217 is a deficient number, since it is larger than the sum of its proper divisors (794671765).

12814885217 is an frugal number, since it uses more digits than its factorization.

12814885217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1165 counting only the distinct ones).

The product of its digits is 286720, while the sum is 47.

The spelling of 12814885217 in words is "twelve billion, eight hundred fourteen million, eight hundred eighty-five thousand, two hundred seventeen".