163453205366563 has 4 divisors (see below), whose sum is σ = 186803663276080. Its totient is φ = 140102747457048.

The previous prime is 163453205366509. The next prime is 163453205366623. The reversal of 163453205366563 is 365663502354361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163453205366563 - 2³⁷ = 163315766413091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163453205366498 and 163453205366507.

It is not an unprimeable number, because it can be changed into a prime (163453205369563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11675228954748 + ... + 11675228954761.

It is an arithmetic number, because the mean of its divisors is an integer number (46700915819020).

Almost surely, 2^{163453205366563} is an apocalyptic number.

163453205366563 is a deficient number, since it is larger than the sum of its proper divisors (23350457909517).

163453205366563 is an equidigital number, since it uses as much as digits as its factorization.

163453205366563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350457909516.

The product of its (nonzero) digits is 104976000, while the sum is 58.

The spelling of 163453205366563 in words is "one hundred sixty-three trillion, four hundred fifty-three billion, two hundred five million, three hundred sixty-six thousand, five hundred sixty-three".