16661482073 has 2 divisors, whose sum is σ = 16661482074. Its totient is φ = 16661482072.

The previous prime is 16661482039. The next prime is 16661482087. The reversal of 16661482073 is 37028416661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16582485529 + 78996544 = 128773^2 + 8888^2 .

It is an emirp because it is prime and its reverse (37028416661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16661482073 - 2⁸ = 16661481817 is a prime.

It is not a weakly prime, because it can be changed into another prime (16661482373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330741036 + 8330741037.

It is an arithmetic number, because the mean of its divisors is an integer number (8330741037).

Almost surely, 2^16661482073 is an apocalyptic number.

It is an amenable number.

16661482073 is a deficient number, since it is larger than the sum of its proper divisors (1).

16661482073 is an equidigital number, since it uses as much as digits as its factorization.

16661482073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 16661482073 in words is "sixteen billion, six hundred sixty-one million, four hundred eighty-two thousand, seventy-three".