163045940428817 has 2 divisors, whose sum is σ = 163045940428818. Its totient is φ = 163045940428816.

The previous prime is 163045940428747. The next prime is 163045940428841. The reversal of 163045940428817 is 718824049540361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157051625536576 + 5994314892241 = 12532024^2 + 2448329^2 .

It is a cyclic number.

It is not a de Polignac number, because 163045940428817 - 2¹⁸ = 163045940166673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163045940428817.

It is not a weakly prime, because it can be changed into another prime (163045940428417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81522970214408 + 81522970214409.

It is an arithmetic number, because the mean of its divisors is an integer number (81522970214409).

It is a 2-persistent number, because it is pandigital, and so is 2⋅163045940428817 = 326091880857634, but 3⋅163045940428817 = 489137821286451 is not.

Almost surely, 2^{163045940428817} is an apocalyptic number.

It is an amenable number.

163045940428817 is a deficient number, since it is larger than the sum of its proper divisors (1).

163045940428817 is an equidigital number, since it uses as much as digits as its factorization.

163045940428817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 163045940428817 in words is "one hundred sixty-three trillion, forty-five billion, nine hundred forty million, four hundred twenty-eight thousand, eight hundred seventeen".