163643506012241 has 2 divisors, whose sum is σ = 163643506012242. Its totient is φ = 163643506012240.

The previous prime is 163643506012211. The next prime is 163643506012297. The reversal of 163643506012241 is 142210605346361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143110282562641 + 20533223449600 = 11962871^2 + 4531360^2 .

It is a cyclic number.

It is not a de Polignac number, because 163643506012241 - 2⁶ = 163643506012177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163643506012192 and 163643506012201.

It is not a weakly prime, because it can be changed into another prime (163643506012211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81821753006120 + 81821753006121.

It is an arithmetic number, because the mean of its divisors is an integer number (81821753006121).

Almost surely, 2^{163643506012241} is an apocalyptic number.

It is an amenable number.

163643506012241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163643506012241 is an equidigital number, since it uses as much as digits as its factorization.

163643506012241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 163643506012241 in words is "one hundred sixty-three trillion, six hundred forty-three billion, five hundred six million, twelve thousand, two hundred forty-one".