985905965608 has 8 divisors (see below), whose sum is σ = 1848573685530. Its totient is φ = 492952982800.

The previous prime is 985905965599. The next prime is 985905965621. The reversal of 985905965608 is 806569509589.

It can be written as a sum of positive squares in only one way, i.e., 529230060324 + 456675905284 = 727482^2 + 675778^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 61619122843 + ... + 61619122858.

Almost surely, 2^985905965608 is an apocalyptic number.

It is an amenable number.

985905965608 is a deficient number, since it is larger than the sum of its proper divisors (862667719922).

985905965608 is a wasteful number, since it uses less digits than its factorization.

985905965608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123238245707 (or 123238245703 counting only the distinct ones).

The product of its (nonzero) digits is 209952000, while the sum is 70.

The spelling of 985905965608 in words is "nine hundred eighty-five billion, nine hundred five million, nine hundred sixty-five thousand, six hundred eight".