5556666671 has 2 divisors, whose sum is σ = 5556666672. Its totient is φ = 5556666670.

The previous prime is 5556666629. The next prime is 5556666677. The reversal of 5556666671 is 1766666555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5556666671 - 2⁶ = 5556666607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5556666677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778333335 + 2778333336.

It is an arithmetic number, because the mean of its divisors is an integer number (2778333336).

Almost surely, 2^5556666671 is an apocalyptic number.

5556666671 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556666671 is an equidigital number, since it uses as much as digits as its factorization.

5556666671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804000, while the sum is 53.

The square root of 5556666671 is about 74543.0524663432. The cubic root of 5556666671 is about 1771.2156810685.

The spelling of 5556666671 in words is "five billion, five hundred fifty-six million, six hundred sixty-six thousand, six hundred seventy-one".