557566661671 has 8 divisors (see below), whose sum is σ = 558234605520. Its totient is φ = 556898865408.

The previous prime is 557566661653. The next prime is 557566661677. The reversal of 557566661671 is 176166665755.

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 557566661671 - 2⁹ = 557566661159 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 (557566661677) 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, 8763145 + ... + 8826541.

It is an arithmetic number, because the mean of its divisors is an integer number (69779325690).

Almost surely, 2^557566661671 is an apocalyptic number.

557566661671 is a deficient number, since it is larger than the sum of its proper divisors (667943849).

557566661671 is an equidigital number, since it uses as much as digits as its factorization.

557566661671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73793.

The product of its digits is 47628000, while the sum is 61.

The spelling of 557566661671 in words is "five hundred fifty-seven billion, five hundred sixty-six million, six hundred sixty-one thousand, six hundred seventy-one".