13465545013181 has 2 divisors, whose sum is σ = 13465545013182. Its totient is φ = 13465545013180.

The previous prime is 13465545013177. The next prime is 13465545013237. The reversal of 13465545013181 is 18131054556431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9875149125625 + 3590395887556 = 3142475^2 + 1894834^2 .

It is a cyclic number.

It is not a de Polignac number, because 13465545013181 - 2² = 13465545013177 is a prime.

It is a super-2 number, since 2×13465545013181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13465545012181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6732772506590 + 6732772506591.

It is an arithmetic number, because the mean of its divisors is an integer number (6732772506591).

Almost surely, 2^{13465545013181} is an apocalyptic number.

It is an amenable number.

13465545013181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13465545013181 is an equidigital number, since it uses as much as digits as its factorization.

13465545013181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 13465545013181 in words is "thirteen trillion, four hundred sixty-five billion, five hundred forty-five million, thirteen thousand, one hundred eighty-one".