13289565881 has 2 divisors, whose sum is σ = 13289565882. Its totient is φ = 13289565880.

The previous prime is 13289565857. The next prime is 13289565923. The reversal of 13289565881 is 18856598231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12060432400 + 1229133481 = 109820^2 + 35059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13289565881 is a prime.

It is a super-2 number, since 2×13289565881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13289565481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6644782940 + 6644782941.

It is an arithmetic number, because the mean of its divisors is an integer number (6644782941).

Almost surely, 2^13289565881 is an apocalyptic number.

It is an amenable number.

13289565881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13289565881 is an equidigital number, since it uses as much as digits as its factorization.

13289565881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 56.

The spelling of 13289565881 in words is "thirteen billion, two hundred eighty-nine million, five hundred sixty-five thousand, eight hundred eighty-one".