8505066953 has 2 divisors, whose sum is σ = 8505066954. Its totient is φ = 8505066952.

The previous prime is 8505066931. The next prime is 8505066961. The reversal of 8505066953 is 3596605058.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8356153744 + 148913209 = 91412^2 + 12203^2 .

It is a cyclic number.

It is not a de Polignac number, because 8505066953 - 2¹² = 8505062857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8505066898 and 8505066907.

It is not a weakly prime, because it can be changed into another prime (8505066923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252533476 + 4252533477.

It is an arithmetic number, because the mean of its divisors is an integer number (4252533477).

Almost surely, 2^8505066953 is an apocalyptic number.

It is an amenable number.

8505066953 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505066953 is an equidigital number, since it uses as much as digits as its factorization.

8505066953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 8505066953 is about 92222.9198897975. The cubic root of 8505066953 is about 2041.2329910845.

The spelling of 8505066953 in words is "eight billion, five hundred five million, sixty-six thousand, nine hundred fifty-three".