985355458889 has 8 divisors (see below), whose sum is σ = 1047284536320. Its totient is φ = 923867158336.

The previous prime is 985355458849. The next prime is 985355458909. The reversal of 985355458889 is 988854553589.

985355458889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 985355458889 - 2¹⁶ = 985355393353 is a prime.

It is a super-2 number, since 2×985355458889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (985355458819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110189609 + ... + 110198550.

It is an arithmetic number, because the mean of its divisors is an integer number (130910567040).

Almost surely, 2^985355458889 is an apocalyptic number.

It is an amenable number.

985355458889 is a deficient number, since it is larger than the sum of its proper divisors (61929077431).

985355458889 is a wasteful number, since it uses less digits than its factorization.

985355458889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220388439.

The product of its digits is 2488320000, while the sum is 77.

The spelling of 985355458889 in words is "nine hundred eighty-five billion, three hundred fifty-five million, four hundred fifty-eight thousand, eight hundred eighty-nine".