2191713707989 has 8 divisors (see below), whose sum is σ = 2360319867360. Its totient is φ = 2023109376816.

The previous prime is 2191713707891. The next prime is 2191713708001. The reversal of 2191713707989 is 9897073171912.

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

It is a cyclic number.

It is not a de Polignac number, because 2191713707989 - 2⁷ = 2191713707861 is a prime.

It is a super-3 number, since 3×2191713707989³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2191713707989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191713767989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003102 + ... + 3660880.

It is an arithmetic number, because the mean of its divisors is an integer number (295039983420).

Almost surely, 2^{2191713707989} is an apocalyptic number.

It is an amenable number.

2191713707989 is a deficient number, since it is larger than the sum of its proper divisors (168606159371).

2191713707989 is a wasteful number, since it uses less digits than its factorization.

2191713707989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914099.

The product of its (nonzero) digits is 12002256, while the sum is 64.

The spelling of 2191713707989 in words is "two trillion, one hundred ninety-one billion, seven hundred thirteen million, seven hundred seven thousand, nine hundred eighty-nine".