66666703734069 has 16 divisors (see below), whose sum is σ = 88940190468864. Its totient is φ = 44418844958400.

The previous prime is 66666703734067. The next prime is 66666703734077. The reversal of 66666703734069 is 96043730766666.

It is not a de Polignac number, because 66666703734069 - 2¹ = 66666703734067 is a prime.

It is a super-2 number, since 2×66666703734069² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66666703733994 and 66666703734012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666703734067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150860932 + ... + 151302194.

It is an arithmetic number, because the mean of its divisors is an integer number (5558761904304).

Almost surely, 2^{66666703734069} is an apocalyptic number.

It is an amenable number.

66666703734069 is a deficient number, since it is larger than the sum of its proper divisors (22273486734795).

66666703734069 is a wasteful number, since it uses less digits than its factorization.

66666703734069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470188.

The product of its (nonzero) digits is 740710656, while the sum is 69.

The spelling of 66666703734069 in words is "sixty-six trillion, six hundred sixty-six billion, seven hundred three million, seven hundred thirty-four thousand, sixty-nine".