20001033320 has 16 divisors (see below), whose sum is σ = 45002325060. Its totient is φ = 8000413312.

The previous prime is 20001033319. The next prime is 20001033331. The reversal of 20001033320 is 2333010002.

It can be written as a sum of positive squares in 2 ways, for example, as 16203762436 + 3797270884 = 127294^2 + 61622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20001033295 and 20001033304.

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, 250012877 + ... + 250012956.

Almost surely, 2^20001033320 is an apocalyptic number.

20001033320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001033320 is an abundant number, since it is smaller than the sum of its proper divisors (25001291740).

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

20001033320 is a wasteful number, since it uses less digits than its factorization.

20001033320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500025844 (or 500025840 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 20001033320 its reverse (2333010002), we get a palindrome (22334043322).

The spelling of 20001033320 in words is "twenty billion, one million, thirty-three thousand, three hundred twenty".