8020805497 has 2 divisors, whose sum is σ = 8020805498. Its totient is φ = 8020805496.

The previous prime is 8020805489. The next prime is 8020805519. The reversal of 8020805497 is 7945080208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7724827881 + 295977616 = 87891^2 + 17204^2 .

It is a cyclic number.

It is not a de Polignac number, because 8020805497 - 2³ = 8020805489 is a prime.

It is not a weakly prime, because it can be changed into another prime (8020805447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4010402748 + 4010402749.

It is an arithmetic number, because the mean of its divisors is an integer number (4010402749).

Almost surely, 2^8020805497 is an apocalyptic number.

It is an amenable number.

8020805497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8020805497 is an equidigital number, since it uses as much as digits as its factorization.

8020805497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 8020805497 is about 89558.9498431061. The cubic root of 8020805497 is about 2001.7322905682.

The spelling of 8020805497 in words is "eight billion, twenty million, eight hundred five thousand, four hundred ninety-seven".