12518416869 has 32 divisors (see below), whose sum is σ = 19718430720. Its totient is φ = 6912993600.

The previous prime is 12518416853. The next prime is 12518416877. The reversal of 12518416869 is 96861481521.

It is a happy number.

It is not a de Polignac number, because 12518416869 - 2⁴ = 12518416853 is a prime.

It is a super-2 number, since 2×12518416869² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518411869) 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 31 ways as a sum of consecutive naturals, for example, 468079 + ... + 494099.

It is an arithmetic number, because the mean of its divisors is an integer number (616200960).

Almost surely, 2^12518416869 is an apocalyptic number.

It is an amenable number.

12518416869 is a deficient number, since it is larger than the sum of its proper divisors (7200013851).

12518416869 is a wasteful number, since it uses less digits than its factorization.

12518416869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26801.

The product of its digits is 829440, while the sum is 51.

The spelling of 12518416869 in words is "twelve billion, five hundred eighteen million, four hundred sixteen thousand, eight hundred sixty-nine".