2068440261 has 16 divisors (see below), whose sum is σ = 2801615040. Its totient is φ = 1357237760.

The previous prime is 2068440247. The next prime is 2068440293. The reversal of 2068440261 is 1620448602.

It is a cyclic number.

It is not a de Polignac number, because 2068440261 - 2¹¹ = 2068438213 is a prime.

It is a super-2 number, since 2×2068440261² = 8556890226651496242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068440221) 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 15 ways as a sum of consecutive naturals, for example, 51541 + ... + 82421.

It is an arithmetic number, because the mean of its divisors is an integer number (175100940).

Almost surely, 2^2068440261 is an apocalyptic number.

It is an amenable number.

2068440261 is a deficient number, since it is larger than the sum of its proper divisors (733174779).

2068440261 is a wasteful number, since it uses less digits than its factorization.

2068440261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31236.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 2068440261 is about 45480.1084101610. The cubic root of 2068440261 is about 1274.1317191732.

Adding to 2068440261 its reverse (1620448602), we get a palindrome (3688888863).

The spelling of 2068440261 in words is "two billion, sixty-eight million, four hundred forty thousand, two hundred sixty-one".