163636201533401 has 2 divisors, whose sum is σ = 163636201533402. Its totient is φ = 163636201533400.

The previous prime is 163636201533319. The next prime is 163636201533403. The reversal of 163636201533401 is 104335102636361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163340157811600 + 296043721801 = 12780460^2 + 544099^2 .

It is an emirp because it is prime and its reverse (104335102636361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163636201533401 is a prime.

Together with 163636201533403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163636201533403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81818100766700 + 81818100766701.

It is an arithmetic number, because the mean of its divisors is an integer number (81818100766701).

Almost surely, 2^{163636201533401} is an apocalyptic number.

It is an amenable number.

163636201533401 is a deficient number, since it is larger than the sum of its proper divisors (1).

163636201533401 is an equidigital number, since it uses as much as digits as its factorization.

163636201533401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 163636201533401 in words is "one hundred sixty-three trillion, six hundred thirty-six billion, two hundred one million, five hundred thirty-three thousand, four hundred one".