18185812711005 has 16 divisors (see below), whose sum is σ = 29275811386560. Its totient is φ = 9639596429568.

The previous prime is 18185812710997. The next prime is 18185812711051. The reversal of 18185812711005 is 50011721858181.

It is not a de Polignac number, because 18185812711005 - 2³ = 18185812710997 is a prime.

It is a super-2 number, since 2×18185812711005² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3718977660 + ... + 3718982549.

It is an arithmetic number, because the mean of its divisors is an integer number (1829738211660).

Almost surely, 2^{18185812711005} is an apocalyptic number.

18185812711005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18185812711005 is a deficient number, since it is larger than the sum of its proper divisors (11089998675555).

18185812711005 is a wasteful number, since it uses less digits than its factorization.

18185812711005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437960380.

The product of its (nonzero) digits is 179200, while the sum is 48.

The spelling of 18185812711005 in words is "eighteen trillion, one hundred eighty-five billion, eight hundred twelve million, seven hundred eleven thousand, five".