66723107708 has 24 divisors (see below), whose sum is σ = 117618446400. Its totient is φ = 33118102080.

The previous prime is 66723107707. The next prime is 66723107719. The reversal of 66723107708 is 80770132766.

66723107708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66723107701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005485 + ... + 1069787.

It is an arithmetic number, because the mean of its divisors is an integer number (4900768600).

Almost surely, 2^66723107708 is an apocalyptic number.

It is an amenable number.

66723107708 is a deficient number, since it is larger than the sum of its proper divisors (50895338692).

66723107708 is a wasteful number, since it uses less digits than its factorization.

66723107708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66197 (or 66195 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 66723107708 in words is "sixty-six billion, seven hundred twenty-three million, one hundred seven thousand, seven hundred eight".