18480566523 has 8 divisors (see below), whose sum is σ = 24679079488. Its totient is φ = 12301215624.

The previous prime is 18480566513. The next prime is 18480566549. The reversal of 18480566523 is 32566508481.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18480566523 - 2⁵ = 18480566491 is a prime.

It is a super-2 number, since 2×18480566523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18480566513) 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 in 7 ways as a sum of consecutive naturals, for example, 4788265 + ... + 4792122.

It is an arithmetic number, because the mean of its divisors is an integer number (3084884936).

Almost surely, 2^18480566523 is an apocalyptic number.

18480566523 is a deficient number, since it is larger than the sum of its proper divisors (6198512965).

18480566523 is an equidigital number, since it uses as much as digits as its factorization.

18480566523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581033.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 18480566523 in words is "eighteen billion, four hundred eighty million, five hundred sixty-six thousand, five hundred twenty-three".