13161345065 has 32 divisors (see below), whose sum is σ = 17987270400. Its totient is φ = 9156913920.

The previous prime is 13161345061. The next prime is 13161345103. The reversal of 13161345065 is 56054316131.

It is not a de Polignac number, because 13161345065 - 2² = 13161345061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13161345061) 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 31 ways as a sum of consecutive naturals, for example, 136004 + ... + 211706.

It is an arithmetic number, because the mean of its divisors is an integer number (562102200).

Almost surely, 2^13161345065 is an apocalyptic number.

It is an amenable number.

13161345065 is a deficient number, since it is larger than the sum of its proper divisors (4825925335).

13161345065 is a wasteful number, since it uses less digits than its factorization.

13161345065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75857.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 13161345065 in words is "thirteen billion, one hundred sixty-one million, three hundred forty-five thousand, sixty-five".