66328158133265 has 16 divisors (see below), whose sum is σ = 90989070066432. Its totient is φ = 45469796121024.

The previous prime is 66328158133249. The next prime is 66328158133267. The reversal of 66328158133265 is 56233185182366.

66328158133265 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 66328158133265 - 2⁴ = 66328158133249 is a prime.

It is a super-3 number, since 3×66328158133265³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66328158133267) 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 15 ways as a sum of consecutive naturals, for example, 257566469 + ... + 257823858.

It is an arithmetic number, because the mean of its divisors is an integer number (5686816879152).

Almost surely, 2^{66328158133265} is an apocalyptic number.

It is an amenable number.

66328158133265 is a deficient number, since it is larger than the sum of its proper divisors (24660911933167).

66328158133265 is a wasteful number, since it uses less digits than its factorization.

66328158133265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515394016.

The product of its digits is 37324800, while the sum is 59.

The spelling of 66328158133265 in words is "sixty-six trillion, three hundred twenty-eight billion, one hundred fifty-eight million, one hundred thirty-three thousand, two hundred sixty-five".