12908442169 has 4 divisors (see below), whose sum is σ = 14752505344. Its totient is φ = 11064378996.

The previous prime is 12908442133. The next prime is 12908442181. The reversal of 12908442169 is 96124480921.

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 a cyclic number.

It is not a de Polignac number, because 12908442169 - 2⁹ = 12908441657 is a prime.

It is a super-2 number, since 2×12908442169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12908442119) 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, 922031577 + ... + 922031590.

It is an arithmetic number, because the mean of its divisors is an integer number (3688126336).

Almost surely, 2^12908442169 is an apocalyptic number.

It is an amenable number.

12908442169 is a deficient number, since it is larger than the sum of its proper divisors (1844063175).

12908442169 is an equidigital number, since it uses as much as digits as its factorization.

12908442169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844063174.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 12908442169 in words is "twelve billion, nine hundred eight million, four hundred forty-two thousand, one hundred sixty-nine".