66047392666 has 8 divisors (see below), whose sum is σ = 100032944544. Its totient is φ = 32703077820.

The previous prime is 66047392639. The next prime is 66047392669. The reversal of 66047392666 is 66629374066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66047392669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160309000 + ... + 160309411.

It is an arithmetic number, because the mean of its divisors is an integer number (12504118068).

Almost surely, 2^66047392666 is an apocalyptic number.

66047392666 is a deficient number, since it is larger than the sum of its proper divisors (33985551878).

66047392666 is a wasteful number, since it uses less digits than its factorization.

66047392666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320618516.

The product of its (nonzero) digits is 11757312, while the sum is 55.

The spelling of 66047392666 in words is "sixty-six billion, forty-seven million, three hundred ninety-two thousand, six hundred sixty-six".