20143560424 has 128 divisors (see below), whose sum is σ = 43047567360. Its totient is φ = 8773567488.

The previous prime is 20143560373. The next prime is 20143560427. The reversal of 20143560424 is 42406534102.

It is not an unprimeable number, because it can be changed into a prime (20143560427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22968274 + ... + 22969150.

It is an arithmetic number, because the mean of its divisors is an integer number (336309120).

Almost surely, 2^20143560424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20143560424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21523783680).

20143560424 is an abundant number, since it is smaller than the sum of its proper divisors (22904006936).

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

20143560424 is a wasteful number, since it uses less digits than its factorization.

20143560424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 20143560424 in words is "twenty billion, one hundred forty-three million, five hundred sixty thousand, four hundred twenty-four".