9777666530 has 8 divisors (see below), whose sum is σ = 17599799772. Its totient is φ = 3911066608.

The previous prime is 9777666491. The next prime is 9777666539. The reversal of 9777666530 is 356667779.

9777666530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9777452161 + 214369 = 98881^2 + 463^2 .

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

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9777666539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488883317 + ... + 488883336.

Almost surely, 2^9777666530 is an apocalyptic number.

9777666530 is a deficient number, since it is larger than the sum of its proper divisors (7822133242).

9777666530 is a wasteful number, since it uses less digits than its factorization.

9777666530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977766660.

The product of its (nonzero) digits is 10001880, while the sum is 56.

The square root of 9777666530 is about 98882.0839687352. The cubic root of 9777666530 is about 2138.3481101695.

The spelling of 9777666530 in words is "nine billion, seven hundred seventy-seven million, six hundred sixty-six thousand, five hundred thirty".