166837174073 has 2 divisors, whose sum is σ = 166837174074. Its totient is φ = 166837174072.

The previous prime is 166837174037. The next prime is 166837174079. The reversal of 166837174073 is 370471738661.

It is a happy number.

Together with previous prime (166837174037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96740905024 + 70096269049 = 311032^2 + 264757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166837174073 is a prime.

It is not a weakly prime, because it can be changed into another prime (166837174079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83418587036 + 83418587037.

It is an arithmetic number, because the mean of its divisors is an integer number (83418587037).

Almost surely, 2^166837174073 is an apocalyptic number.

It is an amenable number.

166837174073 is a deficient number, since it is larger than the sum of its proper divisors (1).

166837174073 is an equidigital number, since it uses as much as digits as its factorization.

166837174073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 166837174073 in words is "one hundred sixty-six billion, eight hundred thirty-seven million, one hundred seventy-four thousand, seventy-three".