12143545687 has 24 divisors (see below), whose sum is σ = 15221300976. Its totient is φ = 9602707968.

The previous prime is 12143545679. The next prime is 12143545691. The reversal of 12143545687 is 78654534121.

It is not a de Polignac number, because 12143545687 - 2³ = 12143545679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143545087) 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, 1443708 + ... + 1452094.

It is an arithmetic number, because the mean of its divisors is an integer number (634220874).

Almost surely, 2^12143545687 is an apocalyptic number.

12143545687 is a deficient number, since it is larger than the sum of its proper divisors (3077755289).

12143545687 is a wasteful number, since it uses less digits than its factorization.

12143545687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10687 (or 10680 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The spelling of 12143545687 in words is "twelve billion, one hundred forty-three million, five hundred forty-five thousand, six hundred eighty-seven".