8505410761 has 2 divisors, whose sum is σ = 8505410762. Its totient is φ = 8505410760.

The previous prime is 8505410717. The next prime is 8505410813. The reversal of 8505410761 is 1670145058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6768188361 + 1737222400 = 82269^2 + 41680^2 .

It is a cyclic number.

It is not a de Polignac number, because 8505410761 - 2¹⁷ = 8505279689 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8505410761.

It is not a weakly prime, because it can be changed into another prime (8505414761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252705380 + 4252705381.

It is an arithmetic number, because the mean of its divisors is an integer number (4252705381).

Almost surely, 2^8505410761 is an apocalyptic number.

It is an amenable number.

8505410761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505410761 is an equidigital number, since it uses as much as digits as its factorization.

8505410761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 8505410761 is about 92224.7838761360. The cubic root of 8505410761 is about 2041.2604955819.

The spelling of 8505410761 in words is "eight billion, five hundred five million, four hundred ten thousand, seven hundred sixty-one".