6665900072489 has 8 divisors (see below), whose sum is σ = 7651438637760. Its totient is φ = 5688678288816.

The previous prime is 6665900072443. The next prime is 6665900072497. The reversal of 6665900072489 is 9842700095666.

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 6665900072489 - 2³² = 6661605105193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6665900072789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079193679 + ... + 2079196884.

It is an arithmetic number, because the mean of its divisors is an integer number (956429829720).

Almost surely, 2^{6665900072489} is an apocalyptic number.

It is an amenable number.

6665900072489 is a deficient number, since it is larger than the sum of its proper divisors (985538565271).

6665900072489 is a wasteful number, since it uses less digits than its factorization.

6665900072489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158390799.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 6665900072489 in words is "six trillion, six hundred sixty-five billion, nine hundred million, seventy-two thousand, four hundred eighty-nine".