12144562317 has 24 divisors (see below), whose sum is σ = 18000630648. Its totient is φ = 7885440000.

The previous prime is 12144562303. The next prime is 12144562361. The reversal of 12144562317 is 71326544121.

12144562317 is a `hidden beast` number, since 1 + 2 + 14 + 4 + 5 + 623 + 17 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1374481476 + 10770080841 = 37074^2 + 103779^2 .

It is not a de Polignac number, because 12144562317 - 2⁸ = 12144562061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144562117) 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 23 ways as a sum of consecutive naturals, for example, 191067 + ... + 246567.

It is an arithmetic number, because the mean of its divisors is an integer number (750026277).

Almost surely, 2^12144562317 is an apocalyptic number.

It is an amenable number.

12144562317 is a deficient number, since it is larger than the sum of its proper divisors (5856068331).

12144562317 is a wasteful number, since it uses less digits than its factorization.

12144562317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56141 (or 56138 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The spelling of 12144562317 in words is "twelve billion, one hundred forty-four million, five hundred sixty-two thousand, three hundred seventeen".