18123247828527 has 4 divisors (see below), whose sum is σ = 24164330438040. Its totient is φ = 12082165219016.

The previous prime is 18123247828513. The next prime is 18123247828579. The reversal of 18123247828527 is 72582874232181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18123247828527 - 2¹⁴ = 18123247812143 is a prime.

It is a super-2 number, since 2×18123247828527² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123247828507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3020541304752 + ... + 3020541304757.

It is an arithmetic number, because the mean of its divisors is an integer number (6041082609510).

Almost surely, 2^{18123247828527} is an apocalyptic number.

18123247828527 is a deficient number, since it is larger than the sum of its proper divisors (6041082609513).

18123247828527 is an equidigital number, since it uses as much as digits as its factorization.

18123247828527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041082609512.

The product of its digits is 24084480, while the sum is 60.

The spelling of 18123247828527 in words is "eighteen trillion, one hundred twenty-three billion, two hundred forty-seven million, eight hundred twenty-eight thousand, five hundred twenty-seven".