818803020215 has 32 divisors (see below), whose sum is σ = 996186574080. Its totient is φ = 646001452800.

The previous prime is 818803020193. The next prime is 818803020227. The reversal of 818803020215 is 512020308818.

It is a happy number.

It is not a de Polignac number, because 818803020215 - 2¹⁸ = 818802758071 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 452126660 + ... + 452128470.

It is an arithmetic number, because the mean of its divisors is an integer number (31130830440).

Almost surely, 2^818803020215 is an apocalyptic number.

818803020215 is a deficient number, since it is larger than the sum of its proper divisors (177383553865).

818803020215 is a wasteful number, since it uses less digits than its factorization.

818803020215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983.

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 818803020215 in words is "eight hundred eighteen billion, eight hundred three million, twenty thousand, two hundred fifteen".