811158042112 has 120 divisors (see below), whose sum is σ = 1785774375000. Its totient is φ = 367816458240.

The previous prime is 811158042041. The next prime is 811158042137. The reversal of 811158042112 is 211240851118.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 25942264 + ... + 25973512.

It is an arithmetic number, because the mean of its divisors is an integer number (14881453125).

Almost surely, 2^811158042112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811158042112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (892887187500).

811158042112 is an abundant number, since it is smaller than the sum of its proper divisors (974616332888).

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

811158042112 is a wasteful number, since it uses less digits than its factorization.

811158042112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31708 (or 31681 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 34.

The spelling of 811158042112 in words is "eight hundred eleven billion, one hundred fifty-eight million, forty-two thousand, one hundred twelve".