217700991001006 has 8 divisors (see below), whose sum is σ = 345760397472240. Its totient is φ = 102447525176928.

The previous prime is 217700991000937. The next prime is 217700991001007. The reversal of 217700991001006 is 600100199007712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217700991001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201485161746 + ... + 3201485161813.

It is an arithmetic number, because the mean of its divisors is an integer number (43220049684030).

Almost surely, 2^{217700991001006} is an apocalyptic number.

217700991001006 is a deficient number, since it is larger than the sum of its proper divisors (128059406471234).

217700991001006 is a wasteful number, since it uses less digits than its factorization.

217700991001006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402970323578.

The product of its (nonzero) digits is 47628, while the sum is 43.

The spelling of 217700991001006 in words is "two hundred seventeen trillion, seven hundred billion, nine hundred ninety-one million, one thousand, six".