66328326157533 has 48 divisors (see below), whose sum is σ = 102326813883840. Its totient is φ = 38082459191040.

The previous prime is 66328326157523. The next prime is 66328326157549. The reversal of 66328326157533 is 33575162382366.

66328326157533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66328326157533 - 2²⁹ = 66327789286621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66328326157523) 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 47 ways as a sum of consecutive naturals, for example, 561032535 + ... + 561150747.

It is an arithmetic number, because the mean of its divisors is an integer number (2131808622580).

Almost surely, 2^{66328326157533} is an apocalyptic number.

It is an amenable number.

66328326157533 is a deficient number, since it is larger than the sum of its proper divisors (35998487726307).

66328326157533 is a wasteful number, since it uses less digits than its factorization.

66328326157533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199610 (or 199599 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 60.

The spelling of 66328326157533 in words is "sixty-six trillion, three hundred twenty-eight billion, three hundred twenty-six million, one hundred fifty-seven thousand, five hundred thirty-three".