18227836784356 has 12 divisors (see below), whose sum is σ = 31907518900992. Its totient is φ = 9111402812648.

The previous prime is 18227836784327. The next prime is 18227836784359. The reversal of 18227836784356 is 65348763872281.

It is not an unprimeable number, because it can be changed into a prime (18227836784359) 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, 628878580 + ... + 628907563.

It is an arithmetic number, because the mean of its divisors is an integer number (2658959908416).

Almost surely, 2^{18227836784356} is an apocalyptic number.

It is an amenable number.

18227836784356 is a deficient number, since it is larger than the sum of its proper divisors (13679682116636).

18227836784356 is a wasteful number, since it uses less digits than its factorization.

18227836784356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257789770 (or 1257789768 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 70.

The spelling of 18227836784356 in words is "eighteen trillion, two hundred twenty-seven billion, eight hundred thirty-six million, seven hundred eighty-four thousand, three hundred fifty-six".