9677128068509 has 12 divisors (see below), whose sum is σ = 10637620297500. Its totient is φ = 8796746481600.

The previous prime is 9677128068481. The next prime is 9677128068521. The reversal of 9677128068509 is 9058608217769.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4396884765625 + 5280243302884 = 2096875^2 + 2297878^2 .

It is not a de Polignac number, because 9677128068509 - 2⁸ = 9677128068253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9677128068589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1254134 + ... + 4574615.

It is an arithmetic number, because the mean of its divisors is an integer number (886468358125).

Almost surely, 2^{9677128068509} is an apocalyptic number.

It is an amenable number.

9677128068509 is a deficient number, since it is larger than the sum of its proper divisors (960492228991).

9677128068509 is a wasteful number, since it uses less digits than its factorization.

9677128068509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842492 (or 5842481 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 68.

The spelling of 9677128068509 in words is "nine trillion, six hundred seventy-seven billion, one hundred twenty-eight million, sixty-eight thousand, five hundred nine".