66106005128 has 32 divisors (see below), whose sum is σ = 129551132160. Its totient is φ = 31563776640.

The previous prime is 66106005127. The next prime is 66106005181. The reversal of 66106005128 is 82150060166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66106005127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184253 + ... + 407628.

It is an arithmetic number, because the mean of its divisors is an integer number (4048472880).

Almost surely, 2^66106005128 is an apocalyptic number.

It is an amenable number.

66106005128 is a deficient number, since it is larger than the sum of its proper divisors (63445127032).

66106005128 is a wasteful number, since it uses less digits than its factorization.

66106005128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592517 (or 592513 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 66106005128 in words is "sixty-six billion, one hundred six million, five thousand, one hundred twenty-eight".