2000217661989 has 16 divisors (see below), whose sum is σ = 2712231613440. Its totient is φ = 1310842277360.

The previous prime is 2000217661961. The next prime is 2000217661999. The reversal of 2000217661989 is 9891667120002.

It is a cyclic number.

It is not a de Polignac number, because 2000217661989 - 2⁸ = 2000217661733 is a prime.

It is a super-2 number, since 2×2000217661989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000217661909) 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 15 ways as a sum of consecutive naturals, for example, 7679554 + ... + 7935740.

It is an arithmetic number, because the mean of its divisors is an integer number (169514475840).

Almost surely, 2^{2000217661989} is an apocalyptic number.

It is an amenable number.

2000217661989 is a deficient number, since it is larger than the sum of its proper divisors (712013951451).

2000217661989 is a wasteful number, since it uses less digits than its factorization.

2000217661989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300360.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 2000217661989 in words is "two trillion, two hundred seventeen million, six hundred sixty-one thousand, nine hundred eighty-nine".