66522050505 has 24 divisors (see below), whose sum is σ = 115553962368. Its totient is φ = 35401788576.

The previous prime is 66522050501. The next prime is 66522050563. The reversal of 66522050505 is 50505022566.

It is not a de Polignac number, because 66522050505 - 2² = 66522050501 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66522050505.

It is not an unprimeable number, because it can be changed into a prime (66522050501) 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 23 ways as a sum of consecutive naturals, for example, 1575567 + ... + 1617236.

It is an arithmetic number, because the mean of its divisors is an integer number (4814748432).

Almost surely, 2^66522050505 is an apocalyptic number.

It is an amenable number.

66522050505 is a deficient number, since it is larger than the sum of its proper divisors (49031911863).

66522050505 is a wasteful number, since it uses less digits than its factorization.

66522050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193277 (or 3193274 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 66522050505 in words is "sixty-six billion, five hundred twenty-two million, fifty thousand, five hundred five".