180239539873 has 4 divisors (see below), whose sum is σ = 180242154928. Its totient is φ = 180236924820.

The previous prime is 180239539871. The next prime is 180239539913. The reversal of 180239539873 is 378935932081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180239539873 - 2¹ = 180239539871 is a prime.

It is a super-2 number, since 2×180239539873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180239539871) 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, 1201263 + ... + 1342948.

It is an arithmetic number, because the mean of its divisors is an integer number (45060538732).

Almost surely, 2^180239539873 is an apocalyptic number.

It is an amenable number.

180239539873 is a deficient number, since it is larger than the sum of its proper divisors (2615055).

180239539873 is an equidigital number, since it uses as much as digits as its factorization.

180239539873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615054.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 180239539873 in words is "one hundred eighty billion, two hundred thirty-nine million, five hundred thirty-nine thousand, eight hundred seventy-three".