13161566411 has 4 divisors (see below), whose sum is σ = 15041790192. Its totient is φ = 11281342632.

The previous prime is 13161566401. The next prime is 13161566417. The reversal of 13161566411 is 11466516131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13161566411 - 2¹⁴ = 13161550027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13161566417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940111880 + ... + 940111893.

It is an arithmetic number, because the mean of its divisors is an integer number (3760447548).

Almost surely, 2^13161566411 is an apocalyptic number.

13161566411 is a deficient number, since it is larger than the sum of its proper divisors (1880223781).

13161566411 is an equidigital number, since it uses as much as digits as its factorization.

13161566411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880223780.

The product of its digits is 12960, while the sum is 35.

The spelling of 13161566411 in words is "thirteen billion, one hundred sixty-one million, five hundred sixty-six thousand, four hundred eleven".