18810730118071 has 4 divisors (see below), whose sum is σ = 18851010054552. Its totient is φ = 18770450181592.

The previous prime is 18810730118009. The next prime is 18810730118143. The reversal of 18810730118071 is 17081103701881.

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 18810730118071 - 2¹⁹ = 18810729593783 is a prime.

It is a super-2 number, since 2×18810730118071² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18810730118771) 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, 20139967540 + ... + 20139968473.

It is an arithmetic number, because the mean of its divisors is an integer number (4712752513638).

Almost surely, 2^{18810730118071} is an apocalyptic number.

18810730118071 is a deficient number, since it is larger than the sum of its proper divisors (40279936481).

18810730118071 is an equidigital number, since it uses as much as digits as its factorization.

18810730118071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40279936480.

The product of its (nonzero) digits is 75264, while the sum is 46.

The spelling of 18810730118071 in words is "eighteen trillion, eight hundred ten billion, seven hundred thirty million, one hundred eighteen thousand, seventy-one".