20001003330 has 256 divisors, whose sum is σ = 62183116800. Its totient is φ = 3995120640.

The previous prime is 20001003311. The next prime is 20001003377. The reversal of 20001003330 is 3330010002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19627561 + ... + 19628579.

It is an arithmetic number, because the mean of its divisors is an integer number (242902800).

Almost surely, 2^20001003330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001003330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31091558400).

20001003330 is an abundant number, since it is smaller than the sum of its proper divisors (42182113470).

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

20001003330 is a wasteful number, since it uses less digits than its factorization.

20001003330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 20001003330 its reverse (3330010002), we get a palindrome (23331013332).

The spelling of 20001003330 in words is "twenty billion, one million, three thousand, three hundred thirty".