814585089636 has 18 divisors (see below), whose sum is σ = 2059090087782. Its totient is φ = 271528363200.

The previous prime is 814585089631. The next prime is 814585089649. The reversal of 814585089636 is 636980585418.

814585089636 is a `hidden beast` number, since 8 + 1 + 4 + 5 + 8 + 508 + 96 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 680387420736 + 134197668900 = 824856^2 + 366330^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×814585089636² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (814585089631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11313681765 + ... + 11313681836.

Almost surely, 2^814585089636 is an apocalyptic number.

It is an amenable number.

814585089636 is an abundant number, since it is smaller than the sum of its proper divisors (1244504998146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

814585089636 is a wasteful number, since it uses less digits than its factorization.

814585089636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22627363611 (or 22627363606 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 63.

The spelling of 814585089636 in words is "eight hundred fourteen billion, five hundred eighty-five million, eighty-nine thousand, six hundred thirty-six".