163885179457 has 2 divisors, whose sum is σ = 163885179458. Its totient is φ = 163885179456.

The previous prime is 163885179433. The next prime is 163885179463. The reversal of 163885179457 is 754971588361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101092838401 + 62792341056 = 317951^2 + 250584^2 .

It is a cyclic number.

It is not a de Polignac number, because 163885179457 - 2⁷ = 163885179329 is a prime.

It is not a weakly prime, because it can be changed into another prime (163885179427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81942589728 + 81942589729.

It is an arithmetic number, because the mean of its divisors is an integer number (81942589729).

Almost surely, 2^163885179457 is an apocalyptic number.

It is an amenable number.

163885179457 is a deficient number, since it is larger than the sum of its proper divisors (1).

163885179457 is an equidigital number, since it uses as much as digits as its factorization.

163885179457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 64.

The spelling of 163885179457 in words is "one hundred sixty-three billion, eight hundred eighty-five million, one hundred seventy-nine thousand, four hundred fifty-seven".