9768782161 has 8 divisors (see below), whose sum is σ = 9956806560. Its totient is φ = 9581506272.

The previous prime is 9768782159. The next prime is 9768782171. The reversal of 9768782161 is 1612878679.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9768782161 - 2¹ = 9768782159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9768782141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160740 + ... + 213013.

It is an arithmetic number, because the mean of its divisors is an integer number (1244600820).

Almost surely, 2^9768782161 is an apocalyptic number.

It is an amenable number.

9768782161 is a deficient number, since it is larger than the sum of its proper divisors (188024399).

9768782161 is a wasteful number, since it uses less digits than its factorization.

9768782161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374255.

The product of its digits is 2032128, while the sum is 55.

The square root of 9768782161 is about 98837.1497009095. The cubic root of 9768782161 is about 2137.7002517540.

The spelling of 9768782161 in words is "nine billion, seven hundred sixty-eight million, seven hundred eighty-two thousand, one hundred sixty-one".