9667880887669 has 4 divisors (see below), whose sum is σ = 9723764592396. Its totient is φ = 9611997182944.

The previous prime is 9667880887627. The next prime is 9667880887757.

9667880887669 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3696025475025 + 5971855412644 = 1922505^2 + 2443738^2 .

It is a cyclic number.

It is not a de Polignac number, because 9667880887669 - 2²⁷ = 9667746669941 is a prime.

It is a super-2 number, since 2×9667880887669² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9667880887669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9667880827669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27941852104 + ... + 27941852449.

It is an arithmetic number, because the mean of its divisors is an integer number (2430941148099).

Almost surely, 2^{9667880887669} is an apocalyptic number.

It is an amenable number.

9667880887669 is a deficient number, since it is larger than the sum of its proper divisors (55883704727).

9667880887669 is a wasteful number, since it uses less digits than its factorization.

9667880887669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55883704726.

The product of its (nonzero) digits is 21069103104, while the sum is 88.

The spelling of 9667880887669 in words is "nine trillion, six hundred sixty-seven billion, eight hundred eighty million, eight hundred eighty-seven thousand, six hundred sixty-nine".