66344575532 has 24 divisors (see below), whose sum is σ = 121490769456. Its totient is φ = 31666759488.

The previous prime is 66344575523. The next prime is 66344575639. The reversal of 66344575532 is 23557544366.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4221158 + ... + 4236845.

It is an arithmetic number, because the mean of its divisors is an integer number (5062115394).

Almost surely, 2^66344575532 is an apocalyptic number.

It is an amenable number.

66344575532 is a deficient number, since it is larger than the sum of its proper divisors (55146193924).

66344575532 is a wasteful number, since it uses less digits than its factorization.

66344575532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458097 (or 8458095 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 50.

The spelling of 66344575532 in words is "sixty-six billion, three hundred forty-four million, five hundred seventy-five thousand, five hundred thirty-two".