2081756011 has 8 divisors (see below), whose sum is σ = 2105222240. Its totient is φ = 2058369408.

The previous prime is 2081756009. The next prime is 2081756041. The reversal of 2081756011 is 1106571802.

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 2081756011 - 2¹ = 2081756009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081756041) 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, 33475 + ... + 72691.

It is an arithmetic number, because the mean of its divisors is an integer number (263152780).

Almost surely, 2^2081756011 is an apocalyptic number.

2081756011 is a deficient number, since it is larger than the sum of its proper divisors (23466229).

2081756011 is a wasteful number, since it uses less digits than its factorization.

2081756011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39813.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 2081756011 is about 45626.2644865871. The cubic root of 2081756011 is about 1276.8599814143.

The spelling of 2081756011 in words is "two billion, eighty-one million, seven hundred fifty-six thousand, eleven".