66555065001 has 8 divisors (see below), whose sum is σ = 88760443360. Its totient is φ = 44359864992.

The previous prime is 66555064997. The next prime is 66555065033. The reversal of 66555065001 is 10056055566.

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

It is not a de Polignac number, because 66555065001 - 2² = 66555064997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66555066001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529316 + ... + 2555493.

It is an arithmetic number, because the mean of its divisors is an integer number (11095055420).

Almost surely, 2^66555065001 is an apocalyptic number.

It is an amenable number.

66555065001 is a deficient number, since it is larger than the sum of its proper divisors (22205378359).

66555065001 is a wasteful number, since it uses less digits than its factorization.

66555065001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089175.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 66555065001 in words is "sixty-six billion, five hundred fifty-five million, sixty-five thousand, one".