13245116565 has 16 divisors (see below), whose sum is σ = 21229444800. Its totient is φ = 7051642752.

The previous prime is 13245116561. The next prime is 13245116567. The reversal of 13245116565 is 56561154231.

It is not a de Polignac number, because 13245116565 - 2² = 13245116561 is a prime.

It is a super-2 number, since 2×13245116565² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245116561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767395 + ... + 784464.

It is an arithmetic number, because the mean of its divisors is an integer number (1326840300).

Almost surely, 2^13245116565 is an apocalyptic number.

13245116565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13245116565 is a deficient number, since it is larger than the sum of its proper divisors (7984328235).

13245116565 is a wasteful number, since it uses less digits than its factorization.

13245116565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552436.

The product of its digits is 108000, while the sum is 39.

The spelling of 13245116565 in words is "thirteen billion, two hundred forty-five million, one hundred sixteen thousand, five hundred sixty-five".