805228722722 has 6 divisors (see below), whose sum is σ = 1207844987643. Its totient is φ = 402613726842.

The previous prime is 805228722703. The next prime is 805228722731. The reversal of 805228722722 is 227227822508.

It can be written as a sum of positive squares in only one way, i.e., 402614361361 + 402614361361 = 634519^2 + 634519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=634519.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 951779 + ... + 1586297.

Almost surely, 2^805228722722 is an apocalyptic number.

805228722722 is a deficient number, since it is larger than the sum of its proper divisors (402616264921).

805228722722 is an frugal number, since it uses more digits than its factorization.

805228722722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269040 (or 634521 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 47.

The spelling of 805228722722 in words is "eight hundred five billion, two hundred twenty-eight million, seven hundred twenty-two thousand, seven hundred twenty-two".