66533000666 has 8 divisors (see below), whose sum is σ = 108872182944. Its totient is φ = 30242273020.

The previous prime is 66533000581. The next prime is 66533000671. The reversal of 66533000666 is 66600033566.

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

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, 1512113630 + ... + 1512113673.

It is an arithmetic number, because the mean of its divisors is an integer number (13609022868).

Almost surely, 2^66533000666 is an apocalyptic number.

66533000666 is a deficient number, since it is larger than the sum of its proper divisors (42339182278).

66533000666 is a wasteful number, since it uses less digits than its factorization.

66533000666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024227316.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 66533000666 in words is "sixty-six billion, five hundred thirty-three million, six hundred sixty-six", and thus it is an aban number.