12335311661 has 4 divisors (see below), whose sum is σ = 12544384800. Its totient is φ = 12126238524.

The previous prime is 12335311657. The next prime is 12335311669. The reversal of 12335311661 is 16611353321.

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 12335311661 - 2² = 12335311657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12335311669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104536481 + ... + 104536598.

It is an arithmetic number, because the mean of its divisors is an integer number (3136096200).

Almost surely, 2^12335311661 is an apocalyptic number.

It is an amenable number.

12335311661 is a deficient number, since it is larger than the sum of its proper divisors (209073139).

12335311661 is an equidigital number, since it uses as much as digits as its factorization.

12335311661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209073138.

The product of its digits is 9720, while the sum is 32.

Adding to 12335311661 its reverse (16611353321), we get a palindrome (28946664982).

The spelling of 12335311661 in words is "twelve billion, three hundred thirty-five million, three hundred eleven thousand, six hundred sixty-one".