805692863872 has 64 divisors (see below), whose sum is σ = 1743857206560. Its totient is φ = 368567377920.

The previous prime is 805692863861. The next prime is 805692863881. The reversal of 805692863872 is 278368296508.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (64).

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 7 ways as a sum of consecutive naturals, for example, 1954404 + ... + 2330467.

Almost surely, 2^805692863872 is an apocalyptic number.

It is an amenable number.

805692863872 is an abundant number, since it is smaller than the sum of its proper divisors (938164342688).

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

805692863872 is a wasteful number, since it uses less digits than its factorization.

805692863872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285011 (or 4284999 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 805692863872 in words is "eight hundred five billion, six hundred ninety-two million, eight hundred sixty-three thousand, eight hundred seventy-two".