12609354281 has 4 divisors (see below), whose sum is σ = 12700069200. Its totient is φ = 12518639364.

The previous prime is 12609354229. The next prime is 12609354341. The reversal of 12609354281 is 18245390621.

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 12609354281 - 2²² = 12605159977 is a prime.

It is a super-2 number, since 2×12609354281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12606354281) 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, 45357251 + ... + 45357528.

It is an arithmetic number, because the mean of its divisors is an integer number (3175017300).

Almost surely, 2^12609354281 is an apocalyptic number.

It is an amenable number.

12609354281 is a deficient number, since it is larger than the sum of its proper divisors (90714919).

12609354281 is an equidigital number, since it uses as much as digits as its factorization.

12609354281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90714918.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 12609354281 in words is "twelve billion, six hundred nine million, three hundred fifty-four thousand, two hundred eighty-one".