20243043020 has 12 divisors (see below), whose sum is σ = 42510390384. Its totient is φ = 8097217200.

The previous prime is 20243043013. The next prime is 20243043031. The reversal of 20243043020 is 2034034202.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1012152151 = 20243043020 / (2 + 0 + 2 + 4 + 3 + 0 + 4 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20243042983 and 20243043001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506076056 + ... + 506076095.

It is an arithmetic number, because the mean of its divisors is an integer number (3542532532).

Almost surely, 2^20243043020 is an apocalyptic number.

20243043020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243043020 is an abundant number, since it is smaller than the sum of its proper divisors (22267347364).

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

20243043020 is a wasteful number, since it uses less digits than its factorization.

20243043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012152160 (or 1012152158 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20243043020 its reverse (2034034202), we get a palindrome (22277077222).

The spelling of 20243043020 in words is "twenty billion, two hundred forty-three million, forty-three thousand, twenty".