2081317023563 has 8 divisors (see below), whose sum is σ = 2144847811680. Its totient is φ = 2018394185920.

The previous prime is 2081317023557. The next prime is 2081317023589. The reversal of 2081317023563 is 3653207131802.

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 2081317023563 - 2¹⁰ = 2081317022539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2081317023563.

It is not an unprimeable number, because it can be changed into a prime (2081317023263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151980668 + ... + 151994361.

It is an arithmetic number, because the mean of its divisors is an integer number (268105976460).

Almost surely, 2^{2081317023563} is an apocalyptic number.

2081317023563 is a deficient number, since it is larger than the sum of its proper divisors (63530788117).

2081317023563 is a wasteful number, since it uses less digits than its factorization.

2081317023563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303975237.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 2081317023563 in words is "two trillion, eighty-one billion, three hundred seventeen million, twenty-three thousand, five hundred sixty-three".