13385108565 has 24 divisors (see below), whose sum is σ = 23211558240. Its totient is φ = 7135431264.

The previous prime is 13385108557. The next prime is 13385108579. The reversal of 13385108565 is 56580158331.

13385108565 is a `hidden beast` number, since 1 + 3 + 3 + 85 + 1 + 0 + 8 + 565 = 666.

It is not a de Polignac number, because 13385108565 - 2³ = 13385108557 is a prime.

It is a super-2 number, since 2×13385108565² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13385108565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31626 + ... + 166644.

It is an arithmetic number, because the mean of its divisors is an integer number (967148260).

Almost surely, 2^13385108565 is an apocalyptic number.

13385108565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13385108565 is a deficient number, since it is larger than the sum of its proper divisors (9826449675).

13385108565 is a wasteful number, since it uses less digits than its factorization.

13385108565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137233 (or 137230 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 13385108565 in words is "thirteen billion, three hundred eighty-five million, one hundred eight thousand, five hundred sixty-five".