12786894837 has 6 divisors (see below), whose sum is σ = 18469959222. Its totient is φ = 8524596552.

The previous prime is 12786894833. The next prime is 12786894853. The reversal of 12786894837 is 73849868721.

12786894837 is a `hidden beast` number, since 1 + 2 + 78 + 6 + 89 + 483 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12786860241 + 34596 = 113079^2 + 186^2 .

It is not a de Polignac number, because 12786894837 - 2² = 12786894833 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786894833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710383038 + ... + 710383055.

It is an arithmetic number, because the mean of its divisors is an integer number (3078326537).

Almost surely, 2^12786894837 is an apocalyptic number.

It is an amenable number.

12786894837 is a deficient number, since it is larger than the sum of its proper divisors (5683064385).

12786894837 is a wasteful number, since it uses less digits than its factorization.

12786894837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420766099 (or 1420766096 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The spelling of 12786894837 in words is "twelve billion, seven hundred eighty-six million, eight hundred ninety-four thousand, eight hundred thirty-seven".