66758260608 has 96 divisors (see below), whose sum is σ = 206881114440. Its totient is φ = 20540998656.

The previous prime is 66758260549. The next prime is 66758260643. The reversal of 66758260608 is 80606285766.

66758260608 is a `hidden beast` number, since 6 + 6 + 7 + 5 + 8 + 26 + 0 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2213866 + ... + 2243817.

Almost surely, 2^66758260608 is an apocalyptic number.

It is an amenable number.

66758260608 is an abundant number, since it is smaller than the sum of its proper divisors (140122853832).

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

66758260608 is a wasteful number, since it uses less digits than its factorization.

66758260608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457716 (or 4457701 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 66758260608 in words is "sixty-six billion, seven hundred fifty-eight million, two hundred sixty thousand, six hundred eight".