12561442160333 has 24 divisors (see below), whose sum is σ = 13886268681600. Its totient is φ = 11354119634880.

The previous prime is 12561442160303. The next prime is 12561442160353. The reversal of 12561442160333 is 33306124416521.

It is a happy number.

It is not a de Polignac number, because 12561442160333 - 2¹⁶ = 12561442094797 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 (12561442160303) 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 23 ways as a sum of consecutive naturals, for example, 173084108 + ... + 173156666.

It is an arithmetic number, because the mean of its divisors is an integer number (578594528400).

Almost surely, 2^{12561442160333} is an apocalyptic number.

It is an amenable number.

12561442160333 is a deficient number, since it is larger than the sum of its proper divisors (1324826521267).

12561442160333 is a wasteful number, since it uses less digits than its factorization.

12561442160333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80753 (or 80742 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 12561442160333 its reverse (33306124416521), we get a palindrome (45867566576854).

The spelling of 12561442160333 in words is "twelve trillion, five hundred sixty-one billion, four hundred forty-two million, one hundred sixty thousand, three hundred thirty-three".