13133321161 has 2 divisors, whose sum is σ = 13133321162. Its totient is φ = 13133321160.

The previous prime is 13133321059. The next prime is 13133321171. The reversal of 13133321161 is 16112333131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11279502025 + 1853819136 = 106205^2 + 43056^2 .

It is a cyclic number.

It is not a de Polignac number, because 13133321161 - 2⁹ = 13133320649 is a prime.

It is not a weakly prime, because it can be changed into another prime (13133321171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566660580 + 6566660581.

It is an arithmetic number, because the mean of its divisors is an integer number (6566660581).

Almost surely, 2^13133321161 is an apocalyptic number.

It is an amenable number.

13133321161 is a deficient number, since it is larger than the sum of its proper divisors (1).

13133321161 is an equidigital number, since it uses as much as digits as its factorization.

13133321161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

Adding to 13133321161 its reverse (16112333131), we get a palindrome (29245654292).

The spelling of 13133321161 in words is "thirteen billion, one hundred thirty-three million, three hundred twenty-one thousand, one hundred sixty-one".