13591161869 has 2 divisors, whose sum is σ = 13591161870. Its totient is φ = 13591161868.

The previous prime is 13591161839. The next prime is 13591161889. The reversal of 13591161869 is 96816119531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13384176100 + 206985769 = 115690^2 + 14387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13591161869 is a prime.

It is a super-4 number, since 4×13591161869⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13591161839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6795580934 + 6795580935.

It is an arithmetic number, because the mean of its divisors is an integer number (6795580935).

Almost surely, 2^13591161869 is an apocalyptic number.

It is an amenable number.

13591161869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13591161869 is an equidigital number, since it uses as much as digits as its factorization.

13591161869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 50.

The spelling of 13591161869 in words is "thirteen billion, five hundred ninety-one million, one hundred sixty-one thousand, eight hundred sixty-nine".