6662605145543 has 8 divisors (see below), whose sum is σ = 6848736426480. Its totient is φ = 6476792857920.

The previous prime is 6662605145531. The next prime is 6662605145557. The reversal of 6662605145543 is 3455415062666.

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 6662605145543 - 2³⁰ = 6661531403719 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 (6662605148543) 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, 79705973 + ... + 79789518.

It is an arithmetic number, because the mean of its divisors is an integer number (856092053310).

Almost surely, 2^{6662605145543} is an apocalyptic number.

6662605145543 is a deficient number, since it is larger than the sum of its proper divisors (186131280937).

6662605145543 is a wasteful number, since it uses less digits than its factorization.

6662605145543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159496657.

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 6662605145543 in words is "six trillion, six hundred sixty-two billion, six hundred five million, one hundred forty-five thousand, five hundred forty-three".