989523174897 has 12 divisors (see below), whose sum is σ = 1429339916160. Its totient is φ = 659668887288.

The previous prime is 989523174869. The next prime is 989523174943. The reversal of 989523174897 is 798471325989.

989523174897 is a `hidden beast` number, since 9 + 8 + 9 + 523 + 1 + 7 + 4 + 8 + 97 = 666.

It is not a de Polignac number, because 989523174897 - 2¹⁹ = 989522650609 is a prime.

It is a super-2 number, since 2×989523174897² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (989523174847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617497 + ... + 1536342.

It is an arithmetic number, because the mean of its divisors is an integer number (119111659680).

Almost surely, 2^989523174897 is an apocalyptic number.

It is an amenable number.

989523174897 is a deficient number, since it is larger than the sum of its proper divisors (439816741263).

989523174897 is a wasteful number, since it uses less digits than its factorization.

989523174897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204892 (or 2204889 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 72.

The spelling of 989523174897 in words is "nine hundred eighty-nine billion, five hundred twenty-three million, one hundred seventy-four thousand, eight hundred ninety-seven".