80943367681 has 8 divisors (see below), whose sum is σ = 88304668704. Its totient is φ = 73582535520.

The previous prime is 80943367679. The next prime is 80943367697. The reversal of 80943367681 is 18676334908.

It is a happy number.

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 80943367681 - 2¹ = 80943367679 is a prime.

It is a super-2 number, since 2×80943367681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80943367621) 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, 312166 + ... + 509248.

It is an arithmetic number, because the mean of its divisors is an integer number (11038083588).

Almost surely, 2^80943367681 is an apocalyptic number.

It is an amenable number.

80943367681 is a deficient number, since it is larger than the sum of its proper divisors (7361301023).

80943367681 is a wasteful number, since it uses less digits than its factorization.

80943367681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234431.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 80943367681 in words is "eighty billion, nine hundred forty-three million, three hundred sixty-seven thousand, six hundred eighty-one".