805132278722 has 18 divisors (see below), whose sum is σ = 1221591886443. Its totient is φ = 397987089984.

The previous prime is 805132278701. The next prime is 805132278749. The reversal of 805132278722 is 227872231508.

It can be written as a sum of positive squares in 5 ways, for example, as 247734157441 + 557398121281 = 497729^2 + 746591^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=634481.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 112934054 + ... + 112941182.

Almost surely, 2^805132278722 is an apocalyptic number.

805132278722 is a deficient number, since it is larger than the sum of its proper divisors (416459607721).

805132278722 is an frugal number, since it uses more digits than its factorization.

805132278722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14438 (or 7220 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 805132278722 in words is "eight hundred five billion, one hundred thirty-two million, two hundred seventy-eight thousand, seven hundred twenty-two".