20330019980 has 12 divisors (see below), whose sum is σ = 42693042000. Its totient is φ = 8132007984.

The previous prime is 20330019979. The next prime is 20330020003. The reversal of 20330019980 is 8991003302.

It is a self number, because there is not a number n which added to its sum of digits gives 20330019980.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508250480 + ... + 508250519.

It is an arithmetic number, because the mean of its divisors is an integer number (3557753500).

Almost surely, 2^20330019980 is an apocalyptic number.

20330019980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330019980 is an abundant number, since it is smaller than the sum of its proper divisors (22363022020).

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

20330019980 is a wasteful number, since it uses less digits than its factorization.

20330019980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016501008 (or 1016501006 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 20330019980 in words is "twenty billion, three hundred thirty million, nineteen thousand, nine hundred eighty".