2081717161 has 8 divisors (see below), whose sum is σ = 2151224064. Its totient is φ = 2013169200.

The previous prime is 2081717147. The next prime is 2081717221. The reversal of 2081717161 is 1617171802.

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

It is a cyclic number.

It is not a de Polignac number, because 2081717161 - 2¹³ = 2081708969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081717101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235321 + ... + 244006.

It is an arithmetic number, because the mean of its divisors is an integer number (268903008).

Almost surely, 2^2081717161 is an apocalyptic number.

It is an amenable number.

2081717161 is a deficient number, since it is larger than the sum of its proper divisors (69506903).

2081717161 is a wasteful number, since it uses less digits than its factorization.

2081717161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479471.

The product of its (nonzero) digits is 4704, while the sum is 34.

The square root of 2081717161 is about 45625.8387429755. The cubic root of 2081717161 is about 1276.8520383895.

Adding to 2081717161 its reverse (1617171802), we get a palindrome (3698888963).

The spelling of 2081717161 in words is "two billion, eighty-one million, seven hundred seventeen thousand, one hundred sixty-one".