163620352361 has 2 divisors, whose sum is σ = 163620352362. Its totient is φ = 163620352360.

The previous prime is 163620352351. The next prime is 163620352369. The reversal of 163620352361 is 163253026361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123597949225 + 40022403136 = 351565^2 + 200056^2 .

It is a cyclic number.

It is not a de Polignac number, because 163620352361 - 2³⁴ = 146440483177 is a prime.

It is not a weakly prime, because it can be changed into another prime (163620352369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81810176180 + 81810176181.

It is an arithmetic number, because the mean of its divisors is an integer number (81810176181).

Almost surely, 2^163620352361 is an apocalyptic number.

It is an amenable number.

163620352361 is a deficient number, since it is larger than the sum of its proper divisors (1).

163620352361 is an equidigital number, since it uses as much as digits as its factorization.

163620352361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 163620352361 in words is "one hundred sixty-three billion, six hundred twenty million, three hundred fifty-two thousand, three hundred sixty-one".