66266891367 has 16 divisors (see below), whose sum is σ = 91232839680. Its totient is φ = 42740272800.

The previous prime is 66266891333. The next prime is 66266891401. The reversal of 66266891367 is 76319866266.

It is an interprime number because it is at equal distance from previous prime (66266891333) and next prime (66266891401).

It is not a de Polignac number, because 66266891367 - 2⁶ = 66266891303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66266891367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66266891567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218934 + ... + 424812.

It is an arithmetic number, because the mean of its divisors is an integer number (5702052480).

Almost surely, 2^66266891367 is an apocalyptic number.

66266891367 is a deficient number, since it is larger than the sum of its proper divisors (24965948313).

66266891367 is a wasteful number, since it uses less digits than its factorization.

66266891367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209374.

The product of its digits is 23514624, while the sum is 60.

The spelling of 66266891367 in words is "sixty-six billion, two hundred sixty-six million, eight hundred ninety-one thousand, three hundred sixty-seven".