16605537713 has 2 divisors, whose sum is σ = 16605537714. Its totient is φ = 16605537712.

The previous prime is 16605537709. The next prime is 16605537719. The reversal of 16605537713 is 31773550661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14739902464 + 1865635249 = 121408^2 + 43193^2 .

It is an emirp because it is prime and its reverse (31773550661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16605537713 - 2² = 16605537709 is a prime.

It is not a weakly prime, because it can be changed into another prime (16605537719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8302768856 + 8302768857.

It is an arithmetic number, because the mean of its divisors is an integer number (8302768857).

Almost surely, 2^16605537713 is an apocalyptic number.

It is an amenable number.

16605537713 is a deficient number, since it is larger than the sum of its proper divisors (1).

16605537713 is an equidigital number, since it uses as much as digits as its factorization.

16605537713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 16605537713 in words is "sixteen billion, six hundred five million, five hundred thirty-seven thousand, seven hundred thirteen".