66707044408 has 8 divisors (see below), whose sum is σ = 125075708280. Its totient is φ = 33353522200.

The previous prime is 66707044357. The next prime is 66707044409. The reversal of 66707044408 is 80444070766.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66707044409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4169190268 + ... + 4169190283.

It is an arithmetic number, because the mean of its divisors is an integer number (15634463535).

Almost surely, 2^66707044408 is an apocalyptic number.

It is an amenable number.

66707044408 is a deficient number, since it is larger than the sum of its proper divisors (58368663872).

66707044408 is a wasteful number, since it uses less digits than its factorization.

66707044408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338380557 (or 8338380553 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 66707044408 in words is "sixty-six billion, seven hundred seven million, forty-four thousand, four hundred eight".