12529385678 has 32 divisors (see below), whose sum is σ = 19945820160. Its totient is φ = 5893140960.

The previous prime is 12529385657. The next prime is 12529385681. The reversal of 12529385678 is 87658392521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597593 + ... + 618203.

It is an arithmetic number, because the mean of its divisors is an integer number (623306880).

Almost surely, 2^12529385678 is an apocalyptic number.

12529385678 is a deficient number, since it is larger than the sum of its proper divisors (7416434482).

12529385678 is a wasteful number, since it uses less digits than its factorization.

12529385678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912.

The product of its digits is 7257600, while the sum is 56.

The spelling of 12529385678 in words is "twelve billion, five hundred twenty-nine million, three hundred eighty-five thousand, six hundred seventy-eight".