163342689823 has 4 divisors (see below), whose sum is σ = 172951083360. Its totient is φ = 153734296288.

The previous prime is 163342689821. The next prime is 163342689827. The reversal of 163342689823 is 328986243361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328986243361 = 2083 ⋅157938667.

It is a cyclic number.

It is not a de Polignac number, because 163342689823 - 2¹ = 163342689821 is a prime.

It is a super-2 number, since 2×163342689823² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163342689821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4804196743 + ... + 4804196776.

It is an arithmetic number, because the mean of its divisors is an integer number (43237770840).

Almost surely, 2^163342689823 is an apocalyptic number.

163342689823 is a deficient number, since it is larger than the sum of its proper divisors (9608393537).

163342689823 is an equidigital number, since it uses as much as digits as its factorization.

163342689823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9608393536.

The product of its digits is 8957952, while the sum is 55.

The spelling of 163342689823 in words is "one hundred sixty-three billion, three hundred forty-two million, six hundred eighty-nine thousand, eight hundred twenty-three".