12432231326661 has 4 divisors (see below), whose sum is σ = 16576308435552. Its totient is φ = 8288154217772.

The previous prime is 12432231326651. The next prime is 12432231326689. The reversal of 12432231326661 is 16662313223421.

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 12432231326661 - 2⁹ = 12432231326149 is a prime.

It is a super-2 number, since 2×12432231326661² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432231326651) 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, 2072038554441 + ... + 2072038554446.

It is an arithmetic number, because the mean of its divisors is an integer number (4144077108888).

Almost surely, 2^{12432231326661} is an apocalyptic number.

It is an amenable number.

12432231326661 is a deficient number, since it is larger than the sum of its proper divisors (4144077108891).

12432231326661 is an equidigital number, since it uses as much as digits as its factorization.

12432231326661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144077108890.

The product of its digits is 373248, while the sum is 42.

The spelling of 12432231326661 in words is "twelve trillion, four hundred thirty-two billion, two hundred thirty-one million, three hundred twenty-six thousand, six hundred sixty-one".