163233144220 has 48 divisors (see below), whose sum is σ = 363393203040. Its totient is φ = 61378064384.

The previous prime is 163233144157. The next prime is 163233144227. The reversal of 163233144220 is 22441332361.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163233144227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9085 + ... + 571444.

It is an arithmetic number, because the mean of its divisors is an integer number (7570691730).

Almost surely, 2^163233144220 is an apocalyptic number.

163233144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163233144220 is an abundant number, since it is smaller than the sum of its proper divisors (200160058820).

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

163233144220 is a wasteful number, since it uses less digits than its factorization.

163233144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581382 (or 581380 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 163233144220 its reverse (22441332361), we get a palindrome (185674476581).

The spelling of 163233144220 in words is "one hundred sixty-three billion, two hundred thirty-three million, one hundred forty-four thousand, two hundred twenty".