20003552020 has 24 divisors (see below), whose sum is σ = 42011020800. Its totient is φ = 8000742432.

The previous prime is 20003552003. The next prime is 20003552047. The reversal of 20003552020 is 2025530002.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 247861 + ... + 318499.

It is an arithmetic number, because the mean of its divisors is an integer number (1750459200).

Almost surely, 2^20003552020 is an apocalyptic number.

20003552020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003552020 is an abundant number, since it is smaller than the sum of its proper divisors (22007468780).

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

20003552020 is a wasteful number, since it uses less digits than its factorization.

20003552020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84807 (or 84805 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The spelling of 20003552020 in words is "twenty billion, three million, five hundred fifty-two thousand, twenty".