66530326323 has 4 divisors (see below), whose sum is σ = 88707101768. Its totient is φ = 44353550880.

The previous prime is 66530326297. The next prime is 66530326327. The reversal of 66530326323 is 32362303566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66530326323 - 2⁸ = 66530326067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66530326327) 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, 11088387718 + ... + 11088387723.

It is an arithmetic number, because the mean of its divisors is an integer number (22176775442).

Almost surely, 2^66530326323 is an apocalyptic number.

66530326323 is a deficient number, since it is larger than the sum of its proper divisors (22176775445).

66530326323 is a wasteful number, since it uses less digits than its factorization.

66530326323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22176775444.

The product of its (nonzero) digits is 349920, while the sum is 39.

Adding to 66530326323 its reverse (32362303566), we get a palindrome (98892629889).

The spelling of 66530326323 in words is "sixty-six billion, five hundred thirty million, three hundred twenty-six thousand, three hundred twenty-three".