18272087872267 has 4 divisors (see below), whose sum is σ = 18287481376296. Its totient is φ = 18256694368240.

The previous prime is 18272087872261. The next prime is 18272087872301. The reversal of 18272087872267 is 76227878027281.

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 18272087872267 - 2³¹ = 18269940388619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18272087872261) 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, 7696750234 + ... + 7696752607.

It is an arithmetic number, because the mean of its divisors is an integer number (4571870344074).

Almost surely, 2^{18272087872267} is an apocalyptic number.

18272087872267 is a deficient number, since it is larger than the sum of its proper divisors (15393504029).

18272087872267 is a wasteful number, since it uses less digits than its factorization.

18272087872267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15393504028.

The product of its (nonzero) digits is 118013952, while the sum is 67.

The spelling of 18272087872267 in words is "eighteen trillion, two hundred seventy-two billion, eighty-seven million, eight hundred seventy-two thousand, two hundred sixty-seven".