6666550158 has 16 divisors (see below), whose sum is σ = 13336226640. Its totient is φ = 2221662336.

The previous prime is 6666550157. The next prime is 6666550201. The reversal of 6666550158 is 8510556666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666550151) 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, 102073 + ... + 154116.

It is an arithmetic number, because the mean of its divisors is an integer number (833514165).

Almost surely, 2^6666550158 is an apocalyptic number.

6666550158 is an abundant number, since it is smaller than the sum of its proper divisors (6669676482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666550158 is a wasteful number, since it uses less digits than its factorization.

6666550158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260531.

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 6666550158 is about 81648.9446226955. The cubic root of 6666550158 is about 1882.0610938129.

The spelling of 6666550158 in words is "six billion, six hundred sixty-six million, five hundred fifty thousand, one hundred fifty-eight".