12016649165441 has 2 divisors, whose sum is σ = 12016649165442. Its totient is φ = 12016649165440.

The previous prime is 12016649165357. The next prime is 12016649165449. The reversal of 12016649165441 is 14456194661021.

12016649165441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6412563548416 + 5604085617025 = 2532304^2 + 2367295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12016649165441 - 2³⁰ = 12015575423617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12016649165441.

It is not a weakly prime, because it can be changed into another prime (12016649165449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008324582720 + 6008324582721.

It is an arithmetic number, because the mean of its divisors is an integer number (6008324582721).

Almost surely, 2^{12016649165441} is an apocalyptic number.

It is an amenable number.

12016649165441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12016649165441 is an equidigital number, since it uses as much as digits as its factorization.

12016649165441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 12016649165441 in words is "twelve trillion, sixteen billion, six hundred forty-nine million, one hundred sixty-five thousand, four hundred forty-one".