818788345305 has 64 divisors (see below), whose sum is σ = 1513755164160. Its totient is φ = 370188048384.

The previous prime is 818788345289. The next prime is 818788345307. The reversal of 818788345305 is 503543887818.

It is not a de Polignac number, because 818788345305 - 2⁴ = 818788345289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (818788345307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3763767 + ... + 3975363.

It is an arithmetic number, because the mean of its divisors is an integer number (23652424440).

Almost surely, 2^818788345305 is an apocalyptic number.

It is an amenable number.

818788345305 is a deficient number, since it is larger than the sum of its proper divisors (694966818855).

818788345305 is a wasteful number, since it uses less digits than its factorization.

818788345305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212018.

The product of its (nonzero) digits is 25804800, while the sum is 60.

The spelling of 818788345305 in words is "eight hundred eighteen billion, seven hundred eighty-eight million, three hundred forty-five thousand, three hundred five".