180456324497 has 4 divisors (see below), whose sum is σ = 180457233636. Its totient is φ = 180455415360.

The previous prime is 180456324481. The next prime is 180456324511. The reversal of 180456324497 is 794423654081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 794423654081 = 323243 ⋅2457667.

It can be written as a sum of positive squares in 2 ways, for example, as 165153644881 + 15302679616 = 406391^2 + 123704^2 .

It is a cyclic number.

It is not a de Polignac number, because 180456324497 - 2⁴ = 180456324481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180456324437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15404 + ... + 600957.

It is an arithmetic number, because the mean of its divisors is an integer number (45114308409).

It is a 1-persistent number, because it is pandigital, but 2⋅180456324497 = 360912648994 is not.

Almost surely, 2^180456324497 is an apocalyptic number.

It is an amenable number.

180456324497 is a deficient number, since it is larger than the sum of its proper divisors (909139).

180456324497 is an equidigital number, since it uses as much as digits as its factorization.

180456324497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909138.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 180456324497 in words is "one hundred eighty billion, four hundred fifty-six million, three hundred twenty-four thousand, four hundred ninety-seven".