66217007001 has 16 divisors (see below), whose sum is σ = 91350135360. Its totient is φ = 42614819520.

The previous prime is 66217006997. The next prime is 66217007009. The reversal of 66217007001 is 10070071266.

It is a happy number.

It is not a de Polignac number, because 66217007001 - 2² = 66217006997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66217007001.

It is not an unprimeable number, because it can be changed into a prime (66217007009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443211 + ... + 573471.

It is an arithmetic number, because the mean of its divisors is an integer number (5709383460).

Almost surely, 2^66217007001 is an apocalyptic number.

It is an amenable number.

66217007001 is a deficient number, since it is larger than the sum of its proper divisors (25133128359).

66217007001 is a wasteful number, since it uses less digits than its factorization.

66217007001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136136.

The product of its (nonzero) digits is 3528, while the sum is 30.

Adding to 66217007001 its reverse (10070071266), we get a palindrome (76287078267).

The spelling of 66217007001 in words is "sixty-six billion, two hundred seventeen million, seven thousand, one".