13444816680161 has 4 divisors (see below), whose sum is σ = 13457756832000. Its totient is φ = 13431876528324.

The previous prime is 13444816680151. The next prime is 13444816680209. The reversal of 13444816680161 is 16108661844431.

13444816680161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-13444816680161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13444816680151) 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, 6470074361 + ... + 6470076438.

It is an arithmetic number, because the mean of its divisors is an integer number (3364439208000).

Almost surely, 2^{13444816680161} is an apocalyptic number.

It is an amenable number.

13444816680161 is a deficient number, since it is larger than the sum of its proper divisors (12940151839).

13444816680161 is a wasteful number, since it uses less digits than its factorization.

13444816680161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12940151838.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 13444816680161 in words is "thirteen trillion, four hundred forty-four billion, eight hundred sixteen million, six hundred eighty thousand, one hundred sixty-one".