980638633984 has 39 divisors (see below), whose sum is σ = 1961164601773. Its totient is φ = 490287628288.

The previous prime is 980638633967. The next prime is 980638634021. The reversal of 980638633984 is 489336836089.

It is a happy number.

The square root of 980638633984 is 990272.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 414942105600 + 565696528384 = 644160^2 + 752128^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 63369672 + ... + 63385144.

Almost surely, 2^980638633984 is an apocalyptic number.

980638633984 is the 990272-nd square number.

It is an amenable number.

980638633984 is a deficient number, since it is larger than the sum of its proper divisors (980525967789).

980638633984 is an frugal number, since it uses more digits than its factorization.

980638633984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30970 (or 15475 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 67.

The spelling of 980638633984 in words is "nine hundred eighty billion, six hundred thirty-eight million, six hundred thirty-three thousand, nine hundred eighty-four".