66007271121167 has 4 divisors (see below), whose sum is σ = 66045054334776. Its totient is φ = 65969487907560.

The previous prime is 66007271121161. The next prime is 66007271121173. The reversal of 66007271121167 is 76112117270066.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66007271121161) and next prime (66007271121173).

It is a cyclic number.

It is not a de Polignac number, because 66007271121167 - 2¹⁶ = 66007271055631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66007271121161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18891604184 + ... + 18891607677.

It is an arithmetic number, because the mean of its divisors is an integer number (16511263583694).

Almost surely, 2^{66007271121167} is an apocalyptic number.

66007271121167 is a deficient number, since it is larger than the sum of its proper divisors (37783213609).

66007271121167 is a wasteful number, since it uses less digits than its factorization.

66007271121167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37783213608.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 66007271121167 in words is "sixty-six trillion, seven billion, two hundred seventy-one million, one hundred twenty-one thousand, one hundred sixty-seven".