1980208423780 has 48 divisors (see below), whose sum is σ = 4163563071360. Its totient is φ = 791107446528.

The previous prime is 1980208423777. The next prime is 1980208423807. The reversal of 1980208423780 is 873248020891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181848576 + ... + 181859464.

It is an arithmetic number, because the mean of its divisors is an integer number (86740897320).

Almost surely, 2^{1980208423780} is an apocalyptic number.

1980208423780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980208423780 is an abundant number, since it is smaller than the sum of its proper divisors (2183354647580).

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

1980208423780 is a wasteful number, since it uses less digits than its factorization.

1980208423780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21268 (or 21266 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 1980208423780 in words is "one trillion, nine hundred eighty billion, two hundred eight million, four hundred twenty-three thousand, seven hundred eighty".