20043100500 has 48 divisors (see below), whose sum is σ = 58365513024. Its totient is φ = 5344826400.

The previous prime is 20043100463. The next prime is 20043100543. The reversal of 20043100500 is 500134002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20043100500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6679534 + ... + 6682533.

It is an arithmetic number, because the mean of its divisors is an integer number (1215948188).

Almost surely, 2^20043100500 is an apocalyptic number.

20043100500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043100500 is an abundant number, since it is smaller than the sum of its proper divisors (38322412524).

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

20043100500 is a wasteful number, since it uses less digits than its factorization.

20043100500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362089 (or 13362077 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 20043100500 its reverse (500134002), we get a palindrome (20543234502).

The spelling of 20043100500 in words is "twenty billion, forty-three million, one hundred thousand, five hundred".