163045940428673 has 2 divisors, whose sum is σ = 163045940428674. Its totient is φ = 163045940428672.

The previous prime is 163045940428619. The next prime is 163045940428687. The reversal of 163045940428673 is 376824049540361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97407879028849 + 65638061399824 = 9869543^2 + 8101732^2 .

It is a cyclic number.

It is not a de Polignac number, because 163045940428673 - 2⁸ = 163045940428417 is a prime.

It is not a weakly prime, because it can be changed into another prime (163045940428873) 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, 81522970214336 + 81522970214337.

It is an arithmetic number, because the mean of its divisors is an integer number (81522970214337).

It is a 2-persistent number, because it is pandigital, and so is 2⋅163045940428673 = 326091880857346, but 3⋅163045940428673 = 489137821286019 is not.

Almost surely, 2^{163045940428673} is an apocalyptic number.

It is an amenable number.

163045940428673 is a deficient number, since it is larger than the sum of its proper divisors (1).

163045940428673 is an equidigital number, since it uses as much as digits as its factorization.

163045940428673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 62.

The spelling of 163045940428673 in words is "one hundred sixty-three trillion, forty-five billion, nine hundred forty million, four hundred twenty-eight thousand, six hundred seventy-three".