20201143424 has 64 divisors (see below), whose sum is σ = 50174942400. Its totient is φ = 7870571520.

The previous prime is 20201143411. The next prime is 20201143427. The reversal of 20201143424 is 42434110202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20201143424.

It is not an unprimeable number, because it can be changed into a prime (20201143427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014959 + ... + 1034670.

It is an arithmetic number, because the mean of its divisors is an integer number (783983475).

Almost surely, 2^20201143424 is an apocalyptic number.

It is an amenable number.

20201143424 is an abundant number, since it is smaller than the sum of its proper divisors (29973798976).

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

20201143424 is a wasteful number, since it uses less digits than its factorization.

20201143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049661 (or 2049649 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20201143424 its reverse (42434110202), we get a palindrome (62635253626).

The spelling of 20201143424 in words is "twenty billion, two hundred one million, one hundred forty-three thousand, four hundred twenty-four".