66130826805808 has 20 divisors (see below), whose sum is σ = 128772338635600. Its totient is φ = 32899255545024.

The previous prime is 66130826805793. The next prime is 66130826805839. The reversal of 66130826805808 is 80850862803166.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10384862835 + ... + 10384869202.

It is an arithmetic number, because the mean of its divisors is an integer number (6438616931780).

Almost surely, 2^{66130826805808} is an apocalyptic number.

It is an amenable number.

66130826805808 is a deficient number, since it is larger than the sum of its proper divisors (62641511829792).

66130826805808 is a wasteful number, since it uses less digits than its factorization.

66130826805808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769732244 (or 20769732238 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 61.

The spelling of 66130826805808 in words is "sixty-six trillion, one hundred thirty billion, eight hundred twenty-six million, eight hundred five thousand, eight hundred eight".