12508711869 has 4 divisors (see below), whose sum is σ = 16678282496. Its totient is φ = 8339141244.

The previous prime is 12508711829. The next prime is 12508711871. The reversal of 12508711869 is 96811780521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12508711869 - 2¹² = 12508707773 is a prime.

It is a super-2 number, since 2×12508711869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508711829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084785309 + ... + 2084785314.

It is an arithmetic number, because the mean of its divisors is an integer number (4169570624).

Almost surely, 2^12508711869 is an apocalyptic number.

It is an amenable number.

12508711869 is a deficient number, since it is larger than the sum of its proper divisors (4169570627).

12508711869 is an equidigital number, since it uses as much as digits as its factorization.

12508711869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4169570626.

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 12508711869 in words is "twelve billion, five hundred eight million, seven hundred eleven thousand, eight hundred sixty-nine".