66100506606 has 24 divisors (see below), whose sum is σ = 148156309080. Its totient is φ = 21273726096.

The previous prime is 66100506583. The next prime is 66100506611. The reversal of 66100506606 is 60660500166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63314140 + ... + 63315183.

It is an arithmetic number, because the mean of its divisors is an integer number (6173179545).

Almost surely, 2^66100506606 is an apocalyptic number.

66100506606 is an abundant number, since it is smaller than the sum of its proper divisors (82055802474).

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

66100506606 is a wasteful number, since it uses less digits than its factorization.

66100506606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126629360 (or 126629357 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 66100506606 in words is "sixty-six billion, one hundred million, five hundred six thousand, six hundred six".