202164223524161 has 2 divisors, whose sum is σ = 202164223524162. Its totient is φ = 202164223524160.

The previous prime is 202164223524149. The next prime is 202164223524239. The reversal of 202164223524161 is 161425322461202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117381103073536 + 84783120450625 = 10834256^2 + 9207775^2 .

It is a cyclic number.

It is not a de Polignac number, because 202164223524161 - 2¹⁰ = 202164223523137 is a prime.

It is not a weakly prime, because it can be changed into another prime (202164223524101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101082111762080 + 101082111762081.

It is an arithmetic number, because the mean of its divisors is an integer number (101082111762081).

Almost surely, 2^{202164223524161} is an apocalyptic number.

It is an amenable number.

202164223524161 is a deficient number, since it is larger than the sum of its proper divisors (1).

202164223524161 is an equidigital number, since it uses as much as digits as its factorization.

202164223524161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 41.

Adding to 202164223524161 its reverse (161425322461202), we get a palindrome (363589545985363).

The spelling of 202164223524161 in words is "two hundred two trillion, one hundred sixty-four billion, two hundred twenty-three million, five hundred twenty-four thousand, one hundred sixty-one".