66669068722067 has 32 divisors (see below), whose sum is σ = 83692644940800. Its totient is φ = 51782163383808.

The previous prime is 66669068722063. The next prime is 66669068722099. The reversal of 66669068722067 is 76022786096666.

66669068722067 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 66669068722067 - 2² = 66669068722063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66669068722063) 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 31 ways as a sum of consecutive naturals, for example, 128491343 + ... + 129009159.

It is an arithmetic number, because the mean of its divisors is an integer number (2615395154400).

Almost surely, 2^{66669068722067} is an apocalyptic number.

66669068722067 is a deficient number, since it is larger than the sum of its proper divisors (17023576218733).

66669068722067 is a wasteful number, since it uses less digits than its factorization.

66669068722067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559955.

The product of its (nonzero) digits is 658409472, while the sum is 71.

The spelling of 66669068722067 in words is "sixty-six trillion, six hundred sixty-nine billion, sixty-eight million, seven hundred twenty-two thousand, sixty-seven".