16660254536441 has 2 divisors, whose sum is σ = 16660254536442. Its totient is φ = 16660254536440.

The previous prime is 16660254536363. The next prime is 16660254536467. The reversal of 16660254536441 is 14463545206661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9723352096441 + 6936902440000 = 3118229^2 + 2633800^2 .

It is an emirp because it is prime and its reverse (14463545206661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16660254536441 - 2³⁰ = 16659180794617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16660254536641) 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 as a sum of consecutive naturals, namely, 8330127268220 + 8330127268221.

It is an arithmetic number, because the mean of its divisors is an integer number (8330127268221).

Almost surely, 2^{16660254536441} is an apocalyptic number.

It is an amenable number.

16660254536441 is a deficient number, since it is larger than the sum of its proper divisors (1).

16660254536441 is an equidigital number, since it uses as much as digits as its factorization.

16660254536441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 16660254536441 in words is "sixteen trillion, six hundred sixty billion, two hundred fifty-four million, five hundred thirty-six thousand, four hundred forty-one".