66865597096 has 16 divisors (see below), whose sum is σ = 125375739840. Its totient is φ = 33432066480.

The previous prime is 66865597039. The next prime is 66865597177. The reversal of 66865597096 is 69079556866.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652641 + ... + 748111.

It is an arithmetic number, because the mean of its divisors is an integer number (7835983740).

Almost surely, 2^66865597096 is an apocalyptic number.

It is an amenable number.

66865597096 is a deficient number, since it is larger than the sum of its proper divisors (58510142744).

66865597096 is a wasteful number, since it uses less digits than its factorization.

66865597096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183024 (or 183020 counting only the distinct ones).

The product of its (nonzero) digits is 146966400, while the sum is 67.

The spelling of 66865597096 in words is "sixty-six billion, eight hundred sixty-five million, five hundred ninety-seven thousand, ninety-six".