18227572871407 has 4 divisors (see below), whose sum is σ = 18228753199800. Its totient is φ = 18226392543016.

The previous prime is 18227572871369. The next prime is 18227572871447. The reversal of 18227572871407 is 70417827572281.

It is a happy number.

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 18227572871407 - 2⁴³ = 9431479849199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227572871447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590141032 + ... + 590171917.

It is an arithmetic number, because the mean of its divisors is an integer number (4557188299950).

Almost surely, 2^{18227572871407} is an apocalyptic number.

18227572871407 is a deficient number, since it is larger than the sum of its proper divisors (1180328393).

18227572871407 is a wasteful number, since it uses less digits than its factorization.

18227572871407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180328392.

The product of its (nonzero) digits is 24586240, while the sum is 61.

The spelling of 18227572871407 in words is "eighteen trillion, two hundred twenty-seven billion, five hundred seventy-two million, eight hundred seventy-one thousand, four hundred seven".