163200259921 has 2 divisors, whose sum is σ = 163200259922. Its totient is φ = 163200259920.

The previous prime is 163200259907. The next prime is 163200259949. The reversal of 163200259921 is 129952002361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116646156225 + 46554103696 = 341535^2 + 215764^2 .

It is a cyclic number.

It is not a de Polignac number, because 163200259921 - 2³¹ = 161052776273 is a prime.

It is not a weakly prime, because it can be changed into another prime (163200259951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81600129960 + 81600129961.

It is an arithmetic number, because the mean of its divisors is an integer number (81600129961).

Almost surely, 2^163200259921 is an apocalyptic number.

It is an amenable number.

163200259921 is a deficient number, since it is larger than the sum of its proper divisors (1).

163200259921 is an equidigital number, since it uses as much as digits as its factorization.

163200259921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 163200259921 in words is "one hundred sixty-three billion, two hundred million, two hundred fifty-nine thousand, nine hundred twenty-one".