20302321109985 has 24 divisors (see below), whose sum is σ = 37042831500480. Its totient is φ = 10258014876192.

The previous prime is 20302321109981. The next prime is 20302321110053. The reversal of 20302321109985 is 58990112320302.

20302321109985 is a `hidden beast` number, since 2 + 0 + 302 + 321 + 10 + 9 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 20302321109985 - 2² = 20302321109981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20302321109985.

It is not an unprimeable number, because it can be changed into a prime (20302321109981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11872701549 + ... + 11872703258.

It is an arithmetic number, because the mean of its divisors is an integer number (1543451312520).

Almost surely, 2^{20302321109985} is an apocalyptic number.

It is an amenable number.

20302321109985 is a deficient number, since it is larger than the sum of its proper divisors (16740510390495).

20302321109985 is a wasteful number, since it uses less digits than its factorization.

20302321109985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23745404837 (or 23745404834 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 20302321109985 in words is "twenty trillion, three hundred two billion, three hundred twenty-one million, one hundred nine thousand, nine hundred eighty-five".