811123303321118 has 4 divisors (see below), whose sum is σ = 1216684954981680. Its totient is φ = 405561651660558.

The previous prime is 811123303321103. The next prime is 811123303321129.

811123303321118 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202780825830278 + ... + 202780825830281.

It is an arithmetic number, because the mean of its divisors is an integer number (304171238745420).

Almost surely, 2^{811123303321118} is an apocalyptic number.

811123303321118 is a deficient number, since it is larger than the sum of its proper divisors (405561651660562).

811123303321118 is a wasteful number, since it uses less digits than its factorization.

811123303321118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405561651660561.

The product of its (nonzero) digits is 20736, while the sum is 38.

It can be divided in two parts, 81112330 and 3321118, that added together give a palindrome (84433448).

The spelling of 811123303321118 in words is "eight hundred eleven trillion, one hundred twenty-three billion, three hundred three million, three hundred twenty-one thousand, one hundred eighteen".