20001002400324 has 144 divisors (see below), whose sum is σ = 55265100980544. Its totient is φ = 6048736761600.

The previous prime is 20001002400319. The next prime is 20001002400341. The reversal of 20001002400324 is 42300420010002.

20001002400324 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 100 + 240 + 0 + 324 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20001002400297 and 20001002400306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1349496834 + ... + 1349511654.

It is an arithmetic number, because the mean of its divisors is an integer number (383785423476).

Almost surely, 2^{20001002400324} 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 20001002400324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27632550490272).

20001002400324 is an abundant number, since it is smaller than the sum of its proper divisors (35264098580220).

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

20001002400324 is a wasteful number, since it uses less digits than its factorization.

20001002400324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21458 (or 21453 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20001002400324 its reverse (42300420010002), we get a palindrome (62301422410326).

The spelling of 20001002400324 in words is "twenty trillion, one billion, two million, four hundred thousand, three hundred twenty-four".