180553536481 has 2 divisors, whose sum is σ = 180553536482. Its totient is φ = 180553536480.

The previous prime is 180553536473. The next prime is 180553536487. The reversal of 180553536481 is 184635355081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152583984400 + 27969552081 = 390620^2 + 167241^2 .

It is a cyclic number.

It is not a de Polignac number, because 180553536481 - 2³ = 180553536473 is a prime.

It is a super-2 number, since 2×180553536481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180553536487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90276768240 + 90276768241.

It is an arithmetic number, because the mean of its divisors is an integer number (90276768241).

Almost surely, 2^180553536481 is an apocalyptic number.

It is an amenable number.

180553536481 is a deficient number, since it is larger than the sum of its proper divisors (1).

180553536481 is an equidigital number, since it uses as much as digits as its factorization.

180553536481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 180553536481 in words is "one hundred eighty billion, five hundred fifty-three million, five hundred thirty-six thousand, four hundred eighty-one".