20002016866667 has 32 divisors (see below), whose sum is σ = 23483907094464. Its totient is φ = 16832592691200.

The previous prime is 20002016866661. The next prime is 20002016866691. The reversal of 20002016866667 is 76666861020002.

It is a happy number.

It is not a de Polignac number, because 20002016866667 - 2⁴ = 20002016866651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002016866661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314995373 + ... + 315058865.

It is an arithmetic number, because the mean of its divisors is an integer number (733872096702).

Almost surely, 2^{20002016866667} is an apocalyptic number.

20002016866667 is a deficient number, since it is larger than the sum of its proper divisors (3481890227797).

20002016866667 is a wasteful number, since it uses less digits than its factorization.

20002016866667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91199.

The product of its (nonzero) digits is 1741824, while the sum is 50.

Adding to 20002016866667 its reverse (76666861020002), we get a palindrome (96668877886669).

The spelling of 20002016866667 in words is "twenty trillion, two billion, sixteen million, eight hundred sixty-six thousand, six hundred sixty-seven".