12438554859 has 16 divisors (see below), whose sum is σ = 19228684800. Its totient is φ = 7931831688.

The previous prime is 12438554851. The next prime is 12438554861. The reversal of 12438554859 is 95845583421.

12438554859 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 8 + 554 + 85 + 9 = 666.

It is not a de Polignac number, because 12438554859 - 2³ = 12438554851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12438554851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10014319 + ... + 10015560.

It is an arithmetic number, because the mean of its divisors is an integer number (1201792800).

Almost surely, 2^12438554859 is an apocalyptic number.

12438554859 is a deficient number, since it is larger than the sum of its proper divisors (6790129941).

12438554859 is a wasteful number, since it uses less digits than its factorization.

12438554859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20029911 (or 20029905 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The spelling of 12438554859 in words is "twelve billion, four hundred thirty-eight million, five hundred fifty-four thousand, eight hundred fifty-nine".