102020019980 has 24 divisors (see below), whose sum is σ = 214302591888. Its totient is φ = 40796474688.

The previous prime is 102020019977. The next prime is 102020020001. The reversal of 102020019980 is 89910020201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648119 + ... + 789998.

It is an arithmetic number, because the mean of its divisors is an integer number (8929274662).

Almost surely, 2^102020019980 is an apocalyptic number.

102020019980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020019980 is an abundant number, since it is smaller than the sum of its proper divisors (112282571908).

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

102020019980 is a wasteful number, since it uses less digits than its factorization.

102020019980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441673 (or 1441671 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 102020019980 in words is "one hundred two billion, twenty million, nineteen thousand, nine hundred eighty".