16670430437173 has 2 divisors, whose sum is σ = 16670430437174. Its totient is φ = 16670430437172.

The previous prime is 16670430437117. The next prime is 16670430437263. The reversal of 16670430437173 is 37173403407661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8573406529444 + 8097023907729 = 2928038^2 + 2845527^2 .

It is an emirp because it is prime and its reverse (37173403407661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16670430437173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16670430437173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16671430437173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335215218586 + 8335215218587.

It is an arithmetic number, because the mean of its divisors is an integer number (8335215218587).

Almost surely, 2^{16670430437173} is an apocalyptic number.

It is an amenable number.

16670430437173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16670430437173 is an equidigital number, since it uses as much as digits as its factorization.

16670430437173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 16670430437173 in words is "sixteen trillion, six hundred seventy billion, four hundred thirty million, four hundred thirty-seven thousand, one hundred seventy-three".