66660668122 has 16 divisors (see below), whose sum is σ = 101265813792. Its totient is φ = 32907980560.

The previous prime is 66660668099. The next prime is 66660668131. The reversal of 66660668122 is 22186606666.

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 7 ways as a sum of consecutive naturals, for example, 594148 + ... + 697375.

It is an arithmetic number, because the mean of its divisors is an integer number (6329113362).

Almost surely, 2^66660668122 is an apocalyptic number.

66660668122 is a deficient number, since it is larger than the sum of its proper divisors (34605145670).

66660668122 is a wasteful number, since it uses less digits than its factorization.

66660668122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291853.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 66660668122 in words is "sixty-six billion, six hundred sixty million, six hundred sixty-eight thousand, one hundred twenty-two".