813092888856 has 16 divisors (see below), whose sum is σ = 2032732222200. Its totient is φ = 271030962944.

The previous prime is 813092888819. The next prime is 813092888873. The reversal of 813092888856 is 658888290318.

It is a super-2 number, since 2×813092888856² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16939435161 + ... + 16939435208.

Almost surely, 2^813092888856 is an apocalyptic number.

It is an amenable number.

813092888856 is an abundant number, since it is smaller than the sum of its proper divisors (1219639333344).

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

813092888856 is a wasteful number, since it uses less digits than its factorization.

813092888856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33878870378 (or 33878870374 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 66.

The spelling of 813092888856 in words is "eight hundred thirteen billion, ninety-two million, eight hundred eighty-eight thousand, eight hundred fifty-six".