12487278789 has 16 divisors (see below), whose sum is σ = 18505333440. Its totient is φ = 8322305040.

The previous prime is 12487278779. The next prime is 12487278803. The reversal of 12487278789 is 98787278421.

12487278789 is a `hidden beast` number, since 1 + 2 + 487 + 2 + 78 + 7 + 89 = 666.

It is not a de Polignac number, because 12487278789 - 2¹⁵ = 12487246021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12487278779) 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, 21279 + ... + 159459.

It is an arithmetic number, because the mean of its divisors is an integer number (1156583340).

Almost surely, 2^12487278789 is an apocalyptic number.

It is an amenable number.

12487278789 is a deficient number, since it is larger than the sum of its proper divisors (6018054651).

12487278789 is a wasteful number, since it uses less digits than its factorization.

12487278789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141537 (or 141531 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The spelling of 12487278789 in words is "twelve billion, four hundred eighty-seven million, two hundred seventy-eight thousand, seven hundred eighty-nine".