13161622081 has 2 divisors, whose sum is σ = 13161622082. Its totient is φ = 13161622080.

The previous prime is 13161622063. The next prime is 13161622099. The reversal of 13161622081 is 18022616131.

It is a balanced prime because it is at equal distance from previous prime (13161622063) and next prime (13161622099).

It can be written as a sum of positive squares in only one way, i.e., 12054063681 + 1107558400 = 109791^2 + 33280^2 .

It is a cyclic number.

It is not a de Polignac number, because 13161622081 - 2¹⁹ = 13161097793 is a prime.

It is a super-2 number, since 2×13161622081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13161622021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6580811040 + 6580811041.

It is an arithmetic number, because the mean of its divisors is an integer number (6580811041).

Almost surely, 2^13161622081 is an apocalyptic number.

It is an amenable number.

13161622081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13161622081 is an equidigital number, since it uses as much as digits as its factorization.

13161622081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 13161622081 in words is "thirteen billion, one hundred sixty-one million, six hundred twenty-two thousand, eighty-one".