66734080808 has 16 divisors (see below), whose sum is σ = 125138703060. Its totient is φ = 33363760000.

The previous prime is 66734080793. The next prime is 66734080849. The reversal of 66734080808 is 80808043766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42790232164 + 23943848644 = 206858^2 + 154738^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322493 + ... + 487308.

Almost surely, 2^66734080808 is an apocalyptic number.

It is an amenable number.

66734080808 is a deficient number, since it is larger than the sum of its proper divisors (58404622252).

66734080808 is a wasteful number, since it uses less digits than its factorization.

66734080808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820108 (or 820104 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 66734080808 in words is "sixty-six billion, seven hundred thirty-four million, eighty thousand, eight hundred eight".