805026253813 has 2 divisors, whose sum is σ = 805026253814. Its totient is φ = 805026253812.

The previous prime is 805026253781. The next prime is 805026253817. The reversal of 805026253813 is 318352620508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705468966084 + 99557287729 = 839922^2 + 315527^2 .

It is a cyclic number.

It is not a de Polignac number, because 805026253813 - 2⁵ = 805026253781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805026253813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805026253817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402513126906 + 402513126907.

It is an arithmetic number, because the mean of its divisors is an integer number (402513126907).

Almost surely, 2^805026253813 is an apocalyptic number.

It is an amenable number.

805026253813 is a deficient number, since it is larger than the sum of its proper divisors (1).

805026253813 is an equidigital number, since it uses as much as digits as its factorization.

805026253813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 805026253813 in words is "eight hundred five billion, twenty-six million, two hundred fifty-three thousand, eight hundred thirteen".