12887916529 has 4 divisors (see below), whose sum is σ = 13646029284. Its totient is φ = 12129803776.

The previous prime is 12887916523. The next prime is 12887916541. The reversal of 12887916529 is 92561978821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11182639504 + 1705277025 = 105748^2 + 41295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12887916529 - 2⁵ = 12887916497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12887916523) 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 3 ways as a sum of consecutive naturals, for example, 379056352 + ... + 379056385.

It is an arithmetic number, because the mean of its divisors is an integer number (3411507321).

Almost surely, 2^12887916529 is an apocalyptic number.

It is an amenable number.

12887916529 is a deficient number, since it is larger than the sum of its proper divisors (758112755).

12887916529 is an equidigital number, since it uses as much as digits as its factorization.

12887916529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758112754.

The product of its digits is 4354560, while the sum is 58.

The spelling of 12887916529 in words is "twelve billion, eight hundred eighty-seven million, nine hundred sixteen thousand, five hundred twenty-nine".