66600073117870 has 8 divisors (see below), whose sum is σ = 119880131612184. Its totient is φ = 26640029247144.

The previous prime is 66600073117861. The next prime is 66600073117901. The reversal of 66600073117870 is 7871137000666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330003655884 + ... + 3330003655903.

It is an arithmetic number, because the mean of its divisors is an integer number (14985016451523).

Almost surely, 2^{66600073117870} is an apocalyptic number.

66600073117870 is a deficient number, since it is larger than the sum of its proper divisors (53280058494314).

66600073117870 is a wasteful number, since it uses less digits than its factorization.

66600073117870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660007311794.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 66600073117870 in words is "sixty-six trillion, six hundred billion, seventy-three million, one hundred seventeen thousand, eight hundred seventy".