1980398022004 has 6 divisors (see below), whose sum is σ = 3465696538514. Its totient is φ = 990199011000.

The previous prime is 1980398021993. The next prime is 1980398022059. The reversal of 1980398022004 is 4002208930891.

It can be written as a sum of positive squares in only one way, i.e., 1571563104400 + 408834917604 = 1253620^2 + 639402^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247549752747 + ... + 247549752754.

Almost surely, 2^{1980398022004} is an apocalyptic number.

It is an amenable number.

1980398022004 is a deficient number, since it is larger than the sum of its proper divisors (1485298516510).

1980398022004 is a wasteful number, since it uses less digits than its factorization.

1980398022004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495099505505 (or 495099505503 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1980398022004 in words is "one trillion, nine hundred eighty billion, three hundred ninety-eight million, twenty-two thousand, four".