8661716269 has 2 divisors, whose sum is σ = 8661716270. Its totient is φ = 8661716268.

The previous prime is 8661716251. The next prime is 8661716281. The reversal of 8661716269 is 9626171668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8581613769 + 80102500 = 92637^2 + 8950^2 .

It is a cyclic number.

It is not a de Polignac number, because 8661716269 - 2⁹ = 8661715757 is a prime.

It is a super-2 number, since 2×8661716269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8661716069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330858134 + 4330858135.

It is an arithmetic number, because the mean of its divisors is an integer number (4330858135).

Almost surely, 2^8661716269 is an apocalyptic number.

It is an amenable number.

8661716269 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661716269 is an equidigital number, since it uses as much as digits as its factorization.

8661716269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 8661716269 is about 93068.3419267798. The cubic root of 8661716269 is about 2053.6888781042.

The spelling of 8661716269 in words is "eight billion, six hundred sixty-one million, seven hundred sixteen thousand, two hundred sixty-nine".