20023454180 has 48 divisors (see below), whose sum is σ = 43030310400. Its totient is φ = 7823200128.

The previous prime is 20023454179. The next prime is 20023454183. The reversal of 20023454180 is 8145432002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20023454183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451646 + ... + 493994.

It is an arithmetic number, because the mean of its divisors is an integer number (896464800).

Almost surely, 2^20023454180 is an apocalyptic number.

20023454180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023454180 is an abundant number, since it is smaller than the sum of its proper divisors (23006856220).

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

20023454180 is a wasteful number, since it uses less digits than its factorization.

20023454180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42908 (or 42906 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20023454180 its reverse (8145432002), we get a palindrome (28168886182).

The spelling of 20023454180 in words is "twenty billion, twenty-three million, four hundred fifty-four thousand, one hundred eighty".