12581223469 has 8 divisors (see below), whose sum is σ = 13015691640. Its totient is φ = 12152832000.

The previous prime is 12581223467. The next prime is 12581223533. The reversal of 12581223469 is 96432218521.

It can be written as a sum of positive squares in 4 ways, for example, as 5685914025 + 6895309444 = 75405^2 + 83038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12581223469 - 2¹ = 12581223467 is a prime.

It is a super-2 number, since 2×12581223469² (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 (12581223463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514964 + ... + 1523245.

It is an arithmetic number, because the mean of its divisors is an integer number (1626961455).

Almost surely, 2^12581223469 is an apocalyptic number.

It is an amenable number.

12581223469 is a deficient number, since it is larger than the sum of its proper divisors (434468171).

12581223469 is a wasteful number, since it uses less digits than its factorization.

12581223469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038351.

The product of its digits is 207360, while the sum is 43.

The spelling of 12581223469 in words is "twelve billion, five hundred eighty-one million, two hundred twenty-three thousand, four hundred sixty-nine".