811022781103 has 16 divisors (see below), whose sum is σ = 830780475616. Its totient is φ = 791502243840.

The previous prime is 811022781053. The next prime is 811022781131. The reversal of 811022781103 is 301187220118.

It is a cyclic number.

It is not a de Polignac number, because 811022781103 - 2²⁹ = 810485910191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811022785103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47667868 + ... + 47684878.

It is an arithmetic number, because the mean of its divisors is an integer number (51923779726).

Almost surely, 2^811022781103 is an apocalyptic number.

811022781103 is a deficient number, since it is larger than the sum of its proper divisors (19757694513).

811022781103 is a wasteful number, since it uses less digits than its factorization.

811022781103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23914.

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 811022781103 in words is "eight hundred eleven billion, twenty-two million, seven hundred eighty-one thousand, one hundred three".