12469759321 has 4 divisors (see below), whose sum is σ = 12484948644. Its totient is φ = 12454570000.

The previous prime is 12469759297. The next prime is 12469759391. The reversal of 12469759321 is 12395796421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12395796421 = 63709 ⋅194569.

It can be written as a sum of positive squares in 2 ways, for example, as 8262810000 + 4206949321 = 90900^2 + 64861^2 .

It is not a de Polignac number, because 12469759321 - 2⁷ = 12469759193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12469759391) 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, 7593430 + ... + 7595071.

It is an arithmetic number, because the mean of its divisors is an integer number (3121237161).

Almost surely, 2^12469759321 is an apocalyptic number.

It is an amenable number.

12469759321 is a deficient number, since it is larger than the sum of its proper divisors (15189323).

12469759321 is an equidigital number, since it uses as much as digits as its factorization.

12469759321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15189322.

The product of its digits is 816480, while the sum is 49.

The spelling of 12469759321 in words is "twelve billion, four hundred sixty-nine million, seven hundred fifty-nine thousand, three hundred twenty-one".