1980430224561 has 24 divisors (see below), whose sum is σ = 2887120665000. Its totient is φ = 1308058543872.

The previous prime is 1980430224529. The next prime is 1980430224587. The reversal of 1980430224561 is 1654220340891.

1980430224561 is a `hidden beast` number, since 1 + 9 + 80 + 4 + 3 + 0 + 2 + 2 + 4 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1223138673936 + 757291550625 = 1105956^2 + 870225^2 .

It is not a de Polignac number, because 1980430224561 - 2⁵ = 1980430224529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1980430224161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11835085 + ... + 12001253.

It is an arithmetic number, because the mean of its divisors is an integer number (120296694375).

Almost surely, 2^{1980430224561} is an apocalyptic number.

It is an amenable number.

1980430224561 is a deficient number, since it is larger than the sum of its proper divisors (906690440439).

1980430224561 is a wasteful number, since it uses less digits than its factorization.

1980430224561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178433 (or 178430 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1980430224561 in words is "one trillion, nine hundred eighty billion, four hundred thirty million, two hundred twenty-four thousand, five hundred sixty-one".