66345556124 has 48 divisors (see below), whose sum is σ = 123723119520. Its totient is φ = 31021731840.

The previous prime is 66345556097. The next prime is 66345556153. The reversal of 66345556124 is 42165554366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7648862 + ... + 7657530.

It is an arithmetic number, because the mean of its divisors is an integer number (2577564990).

Almost surely, 2^66345556124 is an apocalyptic number.

It is an amenable number.

66345556124 is a deficient number, since it is larger than the sum of its proper divisors (57377563396).

66345556124 is a wasteful number, since it uses less digits than its factorization.

66345556124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398 (or 9396 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

The spelling of 66345556124 in words is "sixty-six billion, three hundred forty-five million, five hundred fifty-six thousand, one hundred twenty-four".