6655555543 has 32 divisors (see below), whose sum is σ = 8832983040. Its totient is φ = 4867050240.

The previous prime is 6655555541. The next prime is 6655555561. The reversal of 6655555543 is 3455555566.

It is not a de Polignac number, because 6655555543 - 2¹ = 6655555541 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655555541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23946 + ... + 117832.

It is an arithmetic number, because the mean of its divisors is an integer number (276030720).

Almost surely, 2^6655555543 is an apocalyptic number.

6655555543 is a deficient number, since it is larger than the sum of its proper divisors (2177427497).

6655555543 is a wasteful number, since it uses less digits than its factorization.

6655555543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93967.

The product of its digits is 6750000, while the sum is 49.

The square root of 6655555543 is about 81581.5882598519. The cubic root of 6655555543 is about 1881.0258795667.

The spelling of 6655555543 in words is "six billion, six hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-three".