9666889995 has 64 divisors (see below), whose sum is σ = 18465822720. Its totient is φ = 4222276608.

The previous prime is 9666889963. The next prime is 9666890033. The reversal of 9666889995 is 5999886669.

It is not a de Polignac number, because 9666889995 - 2⁵ = 9666889963 is a prime.

It is a super-2 number, since 2×9666889995² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2966407 + ... + 2969663.

It is an arithmetic number, because the mean of its divisors is an integer number (288528480).

Almost surely, 2^9666889995 is an apocalyptic number.

9666889995 is a deficient number, since it is larger than the sum of its proper divisors (8798932725).

9666889995 is a wasteful number, since it uses less digits than its factorization.

9666889995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524.

The product of its digits is 453496320, while the sum is 75.

The square root of 9666889995 is about 98320.3437493991. The cubic root of 9666889995 is about 2130.2419141578.

The spelling of 9666889995 in words is "nine billion, six hundred sixty-six million, eight hundred eighty-nine thousand, nine hundred ninety-five".