9660780169 has 2 divisors, whose sum is σ = 9660780170. Its totient is φ = 9660780168.

The previous prime is 9660780133. The next prime is 9660780221. The reversal of 9660780169 is 9610870669.

It is an a-pointer prime, because the next prime (9660780221) can be obtained adding 9660780169 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9112611600 + 548168569 = 95460^2 + 23413^2 .

It is a cyclic number.

It is not a de Polignac number, because 9660780169 - 2²³ = 9652391561 is a prime.

It is a super-2 number, since 2×9660780169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9660786169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830390084 + 4830390085.

It is an arithmetic number, because the mean of its divisors is an integer number (4830390085).

Almost surely, 2^9660780169 is an apocalyptic number.

It is an amenable number.

9660780169 is a deficient number, since it is larger than the sum of its proper divisors (1).

9660780169 is an equidigital number, since it uses as much as digits as its factorization.

9660780169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 9660780169 is about 98289.2678220771. The cubic root of 9660780169 is about 2129.7930227883.

The spelling of 9660780169 in words is "nine billion, six hundred sixty million, seven hundred eighty thousand, one hundred sixty-nine".