13020109985 has 8 divisors (see below), whose sum is σ = 15812375040. Its totient is φ = 10290592624.

The previous prime is 13020109981. The next prime is 13020109987. The reversal of 13020109985 is 58990102031.

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 13020109985 - 2² = 13020109981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13020109981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15686465 + ... + 15687294.

It is an arithmetic number, because the mean of its divisors is an integer number (1976546880).

Almost surely, 2^13020109985 is an apocalyptic number.

It is an amenable number.

13020109985 is a deficient number, since it is larger than the sum of its proper divisors (2792265055).

13020109985 is an equidigital number, since it uses as much as digits as its factorization.

13020109985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31373847.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 13020109985 in words is "thirteen billion, twenty million, one hundred nine thousand, nine hundred eighty-five".