989523174976 has 56 divisors (see below), whose sum is σ = 2362207599680. Its totient is φ = 401761285632.

The previous prime is 989523174971. The next prime is 989523174977. The reversal of 989523174976 is 679471325989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×989523174976² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (989523174971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58116675 + ... + 58133698.

Almost surely, 2^989523174976 is an apocalyptic number.

It is an amenable number.

989523174976 is an abundant number, since it is smaller than the sum of its proper divisors (1372684424704).

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

989523174976 is a wasteful number, since it uses less digits than its factorization.

989523174976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116250411 (or 116250401 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 70.

The spelling of 989523174976 in words is "nine hundred eighty-nine billion, five hundred twenty-three million, one hundred seventy-four thousand, nine hundred seventy-six".