818485257905 has 16 divisors (see below), whose sum is σ = 1158703555584. Its totient is φ = 543142290240.

The previous prime is 818485257901. The next prime is 818485257971. The reversal of 818485257905 is 509752584818.

It is not a de Polignac number, because 818485257905 - 2² = 818485257901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818485257901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377181062 + ... + 377183231.

It is an arithmetic number, because the mean of its divisors is an integer number (72418972224).

Almost surely, 2^818485257905 is an apocalyptic number.

It is an amenable number.

818485257905 is a deficient number, since it is larger than the sum of its proper divisors (340218297679).

818485257905 is a wasteful number, since it uses less digits than its factorization.

818485257905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754364336.

The product of its (nonzero) digits is 32256000, while the sum is 62.

The spelling of 818485257905 in words is "eight hundred eighteen billion, four hundred eighty-five million, two hundred fifty-seven thousand, nine hundred five".