16144014666881 has 2 divisors, whose sum is σ = 16144014666882. Its totient is φ = 16144014666880.

The previous prime is 16144014666827. The next prime is 16144014666889. The reversal of 16144014666881 is 18866641044161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16116683964481 + 27330702400 = 4014559^2 + 165320^2 .

It is a cyclic number.

It is not a de Polignac number, because 16144014666881 - 2³⁰ = 16142940925057 is a prime.

It is a super-2 number, since 2×16144014666881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16144014666889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8072007333440 + 8072007333441.

It is an arithmetic number, because the mean of its divisors is an integer number (8072007333441).

Almost surely, 2^{16144014666881} is an apocalyptic number.

It is an amenable number.

16144014666881 is a deficient number, since it is larger than the sum of its proper divisors (1).

16144014666881 is an equidigital number, since it uses as much as digits as its factorization.

16144014666881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 16144014666881 in words is "sixteen trillion, one hundred forty-four billion, fourteen million, six hundred sixty-six thousand, eight hundred eighty-one".