66101210167 has 4 divisors (see below), whose sum is σ = 66544842600. Its totient is φ = 65657577736.

The previous prime is 66101210113. The next prime is 66101210171. The reversal of 66101210167 is 76101210166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76101210166 = 2 ⋅38050605083.

It is a cyclic number.

It is not a de Polignac number, because 66101210167 - 2⁷ = 66101210039 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 (66101210107) 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, 221815993 + ... + 221816290.

It is an arithmetic number, because the mean of its divisors is an integer number (16636210650).

Almost surely, 2^66101210167 is an apocalyptic number.

66101210167 is a deficient number, since it is larger than the sum of its proper divisors (443632433).

66101210167 is a wasteful number, since it uses less digits than its factorization.

66101210167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443632432.

The product of its (nonzero) digits is 3024, while the sum is 31.

Subtracting 66101210167 from its reverse (76101210166), we obtain a palindrome (9999999999).

The spelling of 66101210167 in words is "sixty-six billion, one hundred one million, two hundred ten thousand, one hundred sixty-seven".