13388242985 has 64 divisors (see below), whose sum is σ = 18892222272. Its totient is φ = 9016344576.

The previous prime is 13388242963. The next prime is 13388243047. The reversal of 13388242985 is 58924288331.

It can be written as a sum of positive squares in 32 ways, for example, as 4908964096 + 8479278889 = 70064^2 + 92083^2 .

It is a cyclic number.

It is not a de Polignac number, because 13388242985 - 2²⁶ = 13321134121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12960029 + ... + 12961061.

It is an arithmetic number, because the mean of its divisors is an integer number (295190973).

Almost surely, 2^13388242985 is an apocalyptic number.

It is an amenable number.

13388242985 is a deficient number, since it is larger than the sum of its proper divisors (5503979287).

13388242985 is a wasteful number, since it uses less digits than its factorization.

13388242985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its digits is 3317760, while the sum is 53.

The spelling of 13388242985 in words is "thirteen billion, three hundred eighty-eight million, two hundred forty-two thousand, nine hundred eighty-five".