1980803965122 has 24 divisors (see below), whose sum is σ = 4291918616700. Its totient is φ = 660240804960.

The previous prime is 1980803965057. The next prime is 1980803965123. The reversal of 1980803965122 is 2215693080891.

1980803965122 is a `hidden beast` number, since 1 + 98 + 0 + 8 + 0 + 39 + 6 + 512 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1252275140601 + 728528824521 = 1119051^2 + 853539^2 .

It is not an unprimeable number, because it can be changed into a prime (1980803965123) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1813497 + ... + 2692652.

Almost surely, 2^{1980803965122} is an apocalyptic number.

1980803965122 is an abundant number, since it is smaller than the sum of its proper divisors (2311114651578).

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

1980803965122 is a wasteful number, since it uses less digits than its factorization.

1980803965122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530578 (or 4530575 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 1980803965122 in words is "one trillion, nine hundred eighty billion, eight hundred three million, nine hundred sixty-five thousand, one hundred twenty-two".