9867940497689 has 16 divisors (see below), whose sum is σ = 10009888804608. Its totient is φ = 9726830134272.

The previous prime is 9867940497637. The next prime is 9867940497731.

9867940497689 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9867940497689 - 2⁸ = 9867940497433 is a prime.

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 9867940497689.

It is not an unprimeable number, because it can be changed into a prime (9867940497629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116466389 + ... + 116551085.

It is an arithmetic number, because the mean of its divisors is an integer number (625618050288).

Almost surely, 2^{9867940497689} is an apocalyptic number.

It is an amenable number.

9867940497689 is a deficient number, since it is larger than the sum of its proper divisors (141948306919).

9867940497689 is a wasteful number, since it uses less digits than its factorization.

9867940497689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89624.

The product of its (nonzero) digits is 11851370496, while the sum is 86.

The spelling of 9867940497689 in words is "nine trillion, eight hundred sixty-seven billion, nine hundred forty million, four hundred ninety-seven thousand, six hundred eighty-nine".