12385129959 has 24 divisors (see below), whose sum is σ = 18611978112. Its totient is φ = 8230154040.

The previous prime is 12385129957. The next prime is 12385129979. The reversal of 12385129959 is 95992158321.

It is a happy number.

12385129959 is a `hidden beast` number, since 1 + 2 + 38 + 512 + 9 + 95 + 9 = 666.

It is not a de Polignac number, because 12385129959 - 2¹ = 12385129957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12385129957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6369 + ... + 157514.

It is an arithmetic number, because the mean of its divisors is an integer number (775499088).

Almost surely, 2^12385129959 is an apocalyptic number.

12385129959 is a deficient number, since it is larger than the sum of its proper divisors (6226848153).

12385129959 is an equidigital number, since it uses as much as digits as its factorization.

12385129959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164209 (or 164197 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 54.

The spelling of 12385129959 in words is "twelve billion, three hundred eighty-five million, one hundred twenty-nine thousand, nine hundred fifty-nine".