66322823505 has 16 divisors (see below), whose sum is σ = 106121280384. Its totient is φ = 35370584960.

The previous prime is 66322823467. The next prime is 66322823507. The reversal of 66322823505 is 50532822366.

It is not a de Polignac number, because 66322823505 - 2¹⁰ = 66322822481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66322823507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297220 + ... + 470090.

It is an arithmetic number, because the mean of its divisors is an integer number (6632580024).

Almost surely, 2^66322823505 is an apocalyptic number.

It is an amenable number.

66322823505 is a deficient number, since it is larger than the sum of its proper divisors (39798456879).

66322823505 is a wasteful number, since it uses less digits than its factorization.

66322823505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198456.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 66322823505 in words is "sixty-six billion, three hundred twenty-two million, eight hundred twenty-three thousand, five hundred five".