989753357989 has 16 divisors (see below), whose sum is σ = 1081312130880. Its totient is φ = 898459090560.

The previous prime is 989753357963. The next prime is 989753358017.

989753357989 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 989753357989 - 2⁹ = 989753357477 is a prime.

It is a super-2 number, since 2×989753357989² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989757357989) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 21579409 + ... + 21625225.

It is an arithmetic number, because the mean of its divisors is an integer number (67582008180).

Almost surely, 2^989753357989 is an apocalyptic number.

It is an amenable number.

989753357989 is a deficient number, since it is larger than the sum of its proper divisors (91558772891).

989753357989 is a wasteful number, since it uses less digits than its factorization.

989753357989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48660.

The product of its digits is 4629441600, while the sum is 82.

The spelling of 989753357989 in words is "nine hundred eighty-nine billion, seven hundred fifty-three million, three hundred fifty-seven thousand, nine hundred eighty-nine".