163564334369 has 8 divisors (see below), whose sum is σ = 173331423720. Its totient is φ = 154072374400.

The previous prime is 163564334359. The next prime is 163564334393. The reversal of 163564334369 is 963433465361.

It can be written as a sum of positive squares in 4 ways, for example, as 3013461025 + 160550873344 = 54895^2 + 400688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163564334369 - 2³⁶ = 94844857633 is a prime.

It is a super-2 number, since 2×163564334369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163564334369.

It is not an unprimeable number, because it can be changed into a prime (163564334359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68781122 + ... + 68783499.

It is an arithmetic number, because the mean of its divisors is an integer number (21666427965).

Almost surely, 2^163564334369 is an apocalyptic number.

It is an amenable number.

163564334369 is a deficient number, since it is larger than the sum of its proper divisors (9767089351).

163564334369 is a wasteful number, since it uses less digits than its factorization.

163564334369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137564691.

The product of its digits is 12597120, while the sum is 53.

The spelling of 163564334369 in words is "one hundred sixty-three billion, five hundred sixty-four million, three hundred thirty-four thousand, three hundred sixty-nine".