18223505304827 has 4 divisors (see below), whose sum is σ = 18285701568960. Its totient is φ = 18161309040696.

The previous prime is 18223505304803. The next prime is 18223505304877. The reversal of 18223505304827 is 72840350532281.

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 18223505304827 - 2³⁰ = 18222431563003 is a prime.

It is a super-2 number, since 2×18223505304827² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18223505304877) 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, 31098131627 + ... + 31098132212.

It is an arithmetic number, because the mean of its divisors is an integer number (4571425392240).

Almost surely, 2^{18223505304827} is an apocalyptic number.

18223505304827 is a deficient number, since it is larger than the sum of its proper divisors (62196264133).

18223505304827 is an equidigital number, since it uses as much as digits as its factorization.

18223505304827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62196264132.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 18223505304827 in words is "eighteen trillion, two hundred twenty-three billion, five hundred five million, three hundred four thousand, eight hundred twenty-seven".