66666703734070 has 24 divisors (see below), whose sum is σ = 131900899786992. Its totient is φ = 24242437721040.

The previous prime is 66666703734067. The next prime is 66666703734077. The reversal of 66666703734070 is 7043730766666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666703734077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27548223474 + ... + 27548225893.

It is an arithmetic number, because the mean of its divisors is an integer number (5495870824458).

Almost surely, 2^{66666703734070} is an apocalyptic number.

66666703734070 is a deficient number, since it is larger than the sum of its proper divisors (65234196052922).

66666703734070 is a wasteful number, since it uses less digits than its factorization.

66666703734070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55096449396 (or 55096449385 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 61.

The spelling of 66666703734070 in words is "sixty-six trillion, six hundred sixty-six billion, seven hundred three million, seven hundred thirty-four thousand, seventy".