6545536819181 has 2 divisors, whose sum is σ = 6545536819182. Its totient is φ = 6545536819180.

The previous prime is 6545536819177. The next prime is 6545536819229. The reversal of 6545536819181 is 1819186355456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6309089004100 + 236447815081 = 2511790^2 + 486259^2 .

It is a cyclic number.

It is not a de Polignac number, because 6545536819181 - 2² = 6545536819177 is a prime.

It is a super-2 number, since 2×6545536819181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6545536819681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272768409590 + 3272768409591.

It is an arithmetic number, because the mean of its divisors is an integer number (3272768409591).

Almost surely, 2^{6545536819181} is an apocalyptic number.

It is an amenable number.

6545536819181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6545536819181 is an equidigital number, since it uses as much as digits as its factorization.

6545536819181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104000, while the sum is 62.

The spelling of 6545536819181 in words is "six trillion, five hundred forty-five billion, five hundred thirty-six million, eight hundred nineteen thousand, one hundred eighty-one".