66667333703707 has 16 divisors (see below), whose sum is σ = 72749407565664. Its totient is φ = 60588830464000.

The previous prime is 66667333703701. The next prime is 66667333703743. The reversal of 66667333703707 is 70730733376666.

It is a happy number.

66667333703707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66667333703707 - 2²⁷ = 66667199485979 is a prime.

It is a super-2 number, since 2×66667333703707² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66667333703701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537053607 + ... + 537177727.

It is an arithmetic number, because the mean of its divisors is an integer number (4546837972854).

Almost surely, 2^{66667333703707} is an apocalyptic number.

66667333703707 is a deficient number, since it is larger than the sum of its proper divisors (6082073861957).

66667333703707 is a wasteful number, since it uses less digits than its factorization.

66667333703707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138110.

The product of its (nonzero) digits is 252047376, while the sum is 64.

The spelling of 66667333703707 in words is "sixty-six trillion, six hundred sixty-seven billion, three hundred thirty-three million, seven hundred three thousand, seven hundred seven".