811612216118 has 16 divisors (see below), whose sum is σ = 1373889018960. Its totient is φ = 356193448800.

The previous prime is 811612216109. The next prime is 811612216123.

811612216118 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×811612216118² (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 7 ways as a sum of consecutive naturals, for example, 636059093 + ... + 636060368.

It is an arithmetic number, because the mean of its divisors is an integer number (85868063685).

Almost surely, 2^811612216118 is an apocalyptic number.

811612216118 is a deficient number, since it is larger than the sum of its proper divisors (562276802842).

811612216118 is a wasteful number, since it uses less digits than its factorization.

811612216118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272119503.

The product of its digits is 9216, while the sum is 38.

The spelling of 811612216118 in words is "eight hundred eleven billion, six hundred twelve million, two hundred sixteen thousand, one hundred eighteen".