12002726205161 has 4 divisors (see below), whose sum is σ = 12002843244432. Its totient is φ = 12002609165892.

The previous prime is 12002726205103. The next prime is 12002726205229. The reversal of 12002726205161 is 16150262720021.

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 12002726205161 - 2¹⁰ = 12002726204137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12002726205661) 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, 58365671 + ... + 58570956.

It is an arithmetic number, because the mean of its divisors is an integer number (3000710811108).

Almost surely, 2^{12002726205161} is an apocalyptic number.

It is an amenable number.

12002726205161 is a deficient number, since it is larger than the sum of its proper divisors (117039271).

12002726205161 is a wasteful number, since it uses less digits than its factorization.

12002726205161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117039270.

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 12002726205161 its reverse (16150262720021), we get a palindrome (28152988925182).

The spelling of 12002726205161 in words is "twelve trillion, two billion, seven hundred twenty-six million, two hundred five thousand, one hundred sixty-one".