163823174320 has 80 divisors (see below), whose sum is σ = 421274286720. Its totient is φ = 58853716992.

The previous prime is 163823174311. The next prime is 163823174341. The reversal of 163823174320 is 23471328361.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×163823174320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2090200 + ... + 2167159.

It is an arithmetic number, because the mean of its divisors is an integer number (5265928584).

Almost surely, 2^163823174320 is an apocalyptic number.

163823174320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163823174320 is an abundant number, since it is smaller than the sum of its proper divisors (257451112400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163823174320 is a wasteful number, since it uses less digits than its factorization.

163823174320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257422 (or 4257416 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 163823174320 in words is "one hundred sixty-three billion, eight hundred twenty-three million, one hundred seventy-four thousand, three hundred twenty".