163620322361 has 4 divisors (see below), whose sum is σ = 163657437300. Its totient is φ = 163583207424.

The previous prime is 163620322339. The next prime is 163620322373. The reversal of 163620322361 is 163223026361.

163620322361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163223026361 = 66431 ⋅2457031.

It can be written as a sum of positive squares in 2 ways, for example, as 12245635600 + 151374686761 = 110660^2 + 389069^2 .

It is a cyclic number.

It is not a de Polignac number, because 163620322361 - 2²⁶ = 163553213497 is a prime.

It is a super-2 number, since 2×163620322361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163620352361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18550856 + ... + 18559673.

It is an arithmetic number, because the mean of its divisors is an integer number (40914359325).

Almost surely, 2^163620322361 is an apocalyptic number.

It is an amenable number.

163620322361 is a deficient number, since it is larger than the sum of its proper divisors (37114939).

163620322361 is an equidigital number, since it uses as much as digits as its factorization.

163620322361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37114938.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 163620322361 in words is "one hundred sixty-three billion, six hundred twenty million, three hundred twenty-two thousand, three hundred sixty-one".