811019086764 has 12 divisors (see below), whose sum is σ = 1892377869144. Its totient is φ = 270339695584.

The previous prime is 811019086733. The next prime is 811019086777. The reversal of 811019086764 is 467680910118.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 33792461937 + ... + 33792461960.

It is an arithmetic number, because the mean of its divisors is an integer number (157698155762).

Almost surely, 2^811019086764 is an apocalyptic number.

It is an amenable number.

811019086764 is an abundant number, since it is smaller than the sum of its proper divisors (1081358782380).

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

811019086764 is a wasteful number, since it uses less digits than its factorization.

811019086764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67584923904 (or 67584923902 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 811019086764 in words is "eight hundred eleven billion, nineteen million, eighty-six thousand, seven hundred sixty-four".