811945549118 has 16 divisors (see below), whose sum is σ = 1334340489456. Its totient is φ = 367482181440.

The previous prime is 811945549061. The next prime is 811945549237.

It is a happy number.

811945549118 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79193621 + ... + 79203872.

It is an arithmetic number, because the mean of its divisors is an integer number (83396280591).

Almost surely, 2^811945549118 is an apocalyptic number.

811945549118 is a deficient number, since it is larger than the sum of its proper divisors (522394940338).

811945549118 is a wasteful number, since it uses less digits than its factorization.

811945549118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158397739.

The product of its digits is 2073600, while the sum is 56.

The spelling of 811945549118 in words is "eight hundred eleven billion, nine hundred forty-five million, five hundred forty-nine thousand, one hundred eighteen".