6601823665943 has 8 divisors (see below), whose sum is σ = 7202028796560. Its totient is φ = 6001625092480.

The previous prime is 6601823665859. The next prime is 6601823665967. The reversal of 6601823665943 is 3495663281066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6601823665943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601820665943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598721 + ... + 3682677.

It is an arithmetic number, because the mean of its divisors is an integer number (900253599570).

Almost surely, 2^{6601823665943} is an apocalyptic number.

6601823665943 is a deficient number, since it is larger than the sum of its proper divisors (600205130617).

6601823665943 is a wasteful number, since it uses less digits than its factorization.

6601823665943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278577.

The product of its (nonzero) digits is 33592320, while the sum is 59.

The spelling of 6601823665943 in words is "six trillion, six hundred one billion, eight hundred twenty-three million, six hundred sixty-five thousand, nine hundred forty-three".