804287772313 has 2 divisors, whose sum is σ = 804287772314. Its totient is φ = 804287772312.

The previous prime is 804287772263. The next prime is 804287772331. The reversal of 804287772313 is 313277782408.

Together with next prime (804287772331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 565448353369 + 238839418944 = 751963^2 + 488712^2 .

It is a cyclic number.

It is not a de Polignac number, because 804287772313 - 2³³ = 795697837721 is a prime.

It is not a weakly prime, because it can be changed into another prime (804287772373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402143886156 + 402143886157.

It is an arithmetic number, because the mean of its divisors is an integer number (402143886157).

Almost surely, 2^804287772313 is an apocalyptic number.

It is an amenable number.

804287772313 is a deficient number, since it is larger than the sum of its proper divisors (1).

804287772313 is an equidigital number, since it uses as much as digits as its factorization.

804287772313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 804287772313 in words is "eight hundred four billion, two hundred eighty-seven million, seven hundred seventy-two thousand, three hundred thirteen".