805978072233 has 6 divisors (see below), whose sum is σ = 1164190548794. Its totient is φ = 537318714816.

The previous prime is 805978072153. The next prime is 805978072307. The reversal of 805978072233 is 332270879508.

It can be written as a sum of positive squares in only one way, i.e., 804049369344 + 1928702889 = 896688^2 + 43917^2 .

It is not a de Polignac number, because 805978072233 - 2¹⁶ = 805978006697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 805978072233.

It is not an unprimeable number, because it can be changed into a prime (805978072633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44776559560 + ... + 44776559577.

Almost surely, 2^805978072233 is an apocalyptic number.

It is an amenable number.

805978072233 is a deficient number, since it is larger than the sum of its proper divisors (358212476561).

805978072233 is a wasteful number, since it uses less digits than its factorization.

805978072233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89553119143 (or 89553119140 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 805978072233 in words is "eight hundred five billion, nine hundred seventy-eight million, seventy-two thousand, two hundred thirty-three".