12787815229 has 48 divisors (see below), whose sum is σ = 15461409600. Its totient is φ = 10540513536.

The previous prime is 12787815197. The next prime is 12787815281. The reversal of 12787815229 is 92251878721.

It is not a de Polignac number, because 12787815229 - 2⁵ = 12787815197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12787815829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32873367 + ... + 32873755.

It is an arithmetic number, because the mean of its divisors is an integer number (322112700).

Almost surely, 2^12787815229 is an apocalyptic number.

It is an amenable number.

12787815229 is a deficient number, since it is larger than the sum of its proper divisors (2673594371).

12787815229 is a wasteful number, since it uses less digits than its factorization.

12787815229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 675 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 52.

The spelling of 12787815229 in words is "twelve billion, seven hundred eighty-seven million, eight hundred fifteen thousand, two hundred twenty-nine".