66167276191 has 2 divisors, whose sum is σ = 66167276192. Its totient is φ = 66167276190.

The previous prime is 66167276173. The next prime is 66167276207. The reversal of 66167276191 is 19167276166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66167276191 - 2²¹ = 66165179039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66167277191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33083638095 + 33083638096.

It is an arithmetic number, because the mean of its divisors is an integer number (33083638096).

Almost surely, 2^66167276191 is an apocalyptic number.

66167276191 is a deficient number, since it is larger than the sum of its proper divisors (1).

66167276191 is an equidigital number, since it uses as much as digits as its factorization.

66167276191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The spelling of 66167276191 in words is "sixty-six billion, one hundred sixty-seven million, two hundred seventy-six thousand, one hundred ninety-one".