20001823824 has 40 divisors (see below), whose sum is σ = 54710873280. Its totient is φ = 6275081728.

The previous prime is 20001823823. The next prime is 20001823843. The reversal of 20001823824 is 42832810002.

It is a junction number, because it is equal to n+sod(n) for n = 20001823791 and 20001823800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001823823) 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, 12255204 + ... + 12256835.

It is an arithmetic number, because the mean of its divisors is an integer number (1367771832).

Almost surely, 2^20001823824 is an apocalyptic number.

20001823824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20001823824 is an abundant number, since it is smaller than the sum of its proper divisors (34709049456).

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

20001823824 is a wasteful number, since it uses less digits than its factorization.

20001823824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24512067 (or 24512061 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 20001823824 in words is "twenty billion, one million, eight hundred twenty-three thousand, eight hundred twenty-four".