814444818136 has 64 divisors (see below), whose sum is σ = 1634590800000. Its totient is φ = 379299697920.

The previous prime is 814444818073. The next prime is 814444818151. The reversal of 814444818136 is 631818444418.

It is a super-2 number, since 2×814444818136² (a number of 25 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, 5229115 + ... + 5382613.

It is an arithmetic number, because the mean of its divisors is an integer number (25540481250).

Almost surely, 2^814444818136 is an apocalyptic number.

It is an amenable number.

814444818136 is an abundant number, since it is smaller than the sum of its proper divisors (820145981864).

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

814444818136 is a wasteful number, since it uses less digits than its factorization.

814444818136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154112 (or 154108 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 52.

The spelling of 814444818136 in words is "eight hundred fourteen billion, four hundred forty-four million, eight hundred eighteen thousand, one hundred thirty-six".