8122037681 has 8 divisors (see below), whose sum is σ = 8244872160. Its totient is φ = 7999250688.

The previous prime is 8122037669. The next prime is 8122037701. The reversal of 8122037681 is 1867302218.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8122037681 is a prime.

It is a super-2 number, since 2×8122037681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8122237681) 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, 493670 + ... + 509856.

It is an arithmetic number, because the mean of its divisors is an integer number (1030609020).

Almost surely, 2^8122037681 is an apocalyptic number.

It is an amenable number.

8122037681 is a deficient number, since it is larger than the sum of its proper divisors (122834479).

8122037681 is a wasteful number, since it uses less digits than its factorization.

8122037681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23743.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 8122037681 is about 90122.3483992733. The cubic root of 8122037681 is about 2010.1185281126.

Adding to 8122037681 its reverse (1867302218), we get a palindrome (9989339899).

The spelling of 8122037681 in words is "eight billion, one hundred twenty-two million, thirty-seven thousand, six hundred eighty-one".