985694894321 has 8 divisors (see below), whose sum is σ = 989541407400. Its totient is φ = 981851663232.

The previous prime is 985694894297. The next prime is 985694894347. The reversal of 985694894321 is 123498496589.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 433311493696 + 552383400625 = 658264^2 + 743225^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985694894321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985694794321) 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, 217796 + ... + 1420853.

It is an arithmetic number, because the mean of its divisors is an integer number (123692675925).

Almost surely, 2^985694894321 is an apocalyptic number.

It is an amenable number.

985694894321 is a deficient number, since it is larger than the sum of its proper divisors (3846513079).

985694894321 is a wasteful number, since it uses less digits than its factorization.

985694894321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640995.

The product of its digits is 134369280, while the sum is 68.

The spelling of 985694894321 in words is "nine hundred eighty-five billion, six hundred ninety-four million, eight hundred ninety-four thousand, three hundred twenty-one".