985136786018644 has 24 divisors (see below), whose sum is σ = 1970274322816128. Its totient is φ = 422201318841120.

The previous prime is 985136786018633. The next prime is 985136786018669. The reversal of 985136786018644 is 446810687631589.

It is a hoax number, since the sum of its digits (76) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95343234 + ... + 105169414.

It is an arithmetic number, because the mean of its divisors is an integer number (82094763450672).

Almost surely, 2^{985136786018644} is an apocalyptic number.

It is an amenable number.

985136786018644 is an abundant number, since it is smaller than the sum of its proper divisors (985137536797484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985136786018644 is a wasteful number, since it uses less digits than its factorization.

985136786018644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13406775 (or 13406773 counting only the distinct ones).

The product of its (nonzero) digits is 1672151040, while the sum is 76.

The spelling of 985136786018644 in words is "nine hundred eighty-five trillion, one hundred thirty-six billion, seven hundred eighty-six million, eighteen thousand, six hundred forty-four".