18701225112827 has 4 divisors (see below), whose sum is σ = 18701235408120. Its totient is φ = 18701214817536.

The previous prime is 18701225112811. The next prime is 18701225112847. The reversal of 18701225112827 is 72821152210781.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18701225112827 - 2⁴ = 18701225112811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18701225112847) 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, 1614653 + ... + 6325310.

It is an arithmetic number, because the mean of its divisors is an integer number (4675308852030).

Almost surely, 2^{18701225112827} is an apocalyptic number.

18701225112827 is a deficient number, since it is larger than the sum of its proper divisors (10295293).

18701225112827 is an equidigital number, since it uses as much as digits as its factorization.

18701225112827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10295292.

The product of its (nonzero) digits is 250880, while the sum is 47.

The spelling of 18701225112827 in words is "eighteen trillion, seven hundred one billion, two hundred twenty-five million, one hundred twelve thousand, eight hundred twenty-seven".