163535666535361 has 2 divisors, whose sum is σ = 163535666535362. Its totient is φ = 163535666535360.

The previous prime is 163535666535251. The next prime is 163535666535379.

163535666535361 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105755904845361 + 57779761690000 = 10283769^2 + 7601300^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 163535666535361 - 2³¹ = 163533519051713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163535666535293 and 163535666535302.

It is not a weakly prime, because it can be changed into another prime (163535666535161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81767833267680 + 81767833267681.

It is an arithmetic number, because the mean of its divisors is an integer number (81767833267681).

Almost surely, 2^{163535666535361} is an apocalyptic number.

It is an amenable number.

163535666535361 is a deficient number, since it is larger than the sum of its proper divisors (1).

163535666535361 is an equidigital number, since it uses as much as digits as its factorization.

163535666535361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660000, while the sum is 64.

The spelling of 163535666535361 in words is "one hundred sixty-three trillion, five hundred thirty-five billion, six hundred sixty-six million, five hundred thirty-five thousand, three hundred sixty-one".