163043334257 has 2 divisors, whose sum is σ = 163043334258. Its totient is φ = 163043334256.

The previous prime is 163043334203. The next prime is 163043334263. The reversal of 163043334257 is 752433340361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122394322801 + 40649011456 = 349849^2 + 201616^2 .

It is a cyclic number.

It is not a de Polignac number, because 163043334257 - 2¹⁴ = 163043317873 is a prime.

It is not a weakly prime, because it can be changed into another prime (163043334457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81521667128 + 81521667129.

It is an arithmetic number, because the mean of its divisors is an integer number (81521667129).

Almost surely, 2^163043334257 is an apocalyptic number.

It is an amenable number.

163043334257 is a deficient number, since it is larger than the sum of its proper divisors (1).

163043334257 is an equidigital number, since it uses as much as digits as its factorization.

163043334257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 41.

The spelling of 163043334257 in words is "one hundred sixty-three billion, forty-three million, three hundred thirty-four thousand, two hundred fifty-seven".