180645452609 has 12 divisors (see below), whose sum is σ = 185291116752. Its totient is φ = 176113623840.

The previous prime is 180645452597. The next prime is 180645452629. The reversal of 180645452609 is 906254546081.

180645452609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 180645452609 - 2³² = 176350485313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180645452629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361134 + ... + 2436440.

It is an arithmetic number, because the mean of its divisors is an integer number (15440926396).

Almost surely, 2^180645452609 is an apocalyptic number.

It is an amenable number.

180645452609 is a deficient number, since it is larger than the sum of its proper divisors (4645664143).

180645452609 is an equidigital number, since it uses as much as digits as its factorization.

180645452609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76816 (or 76775 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 180645452609 in words is "one hundred eighty billion, six hundred forty-five million, four hundred fifty-two thousand, six hundred nine".