8512733209 has 2 divisors, whose sum is σ = 8512733210. Its totient is φ = 8512733208.

The previous prime is 8512733087. The next prime is 8512733213. The reversal of 8512733209 is 9023372158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4662158400 + 3850574809 = 68280^2 + 62053^2 .

It is a cyclic number.

It is not a de Polignac number, because 8512733209 - 2⁷ = 8512733081 is a prime.

It is a super-2 number, since 2×8512733209² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8512733239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256366604 + 4256366605.

It is an arithmetic number, because the mean of its divisors is an integer number (4256366605).

Almost surely, 2^8512733209 is an apocalyptic number.

It is an amenable number.

8512733209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8512733209 is an equidigital number, since it uses as much as digits as its factorization.

8512733209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 8512733209 is about 92264.4742520110. The cubic root of 8512733209 is about 2041.8461124684.

It can be divided in two parts, 85127 and 33209, that added together give a square (118336 = 344²).

The spelling of 8512733209 in words is "eight billion, five hundred twelve million, seven hundred thirty-three thousand, two hundred nine".