80085346681 has 4 divisors (see below), whose sum is σ = 81596391012. Its totient is φ = 78574302352.

The previous prime is 80085346661. The next prime is 80085346697. The reversal of 80085346681 is 18664358008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36198867600 + 43886479081 = 190260^2 + 209491^2 .

It is a cyclic number.

It is not a de Polignac number, because 80085346681 - 2¹⁹ = 80084822393 is a prime.

It is a super-2 number, since 2×80085346681² (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 (80085346661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755522086 + ... + 755522191.

It is an arithmetic number, because the mean of its divisors is an integer number (20399097753).

Almost surely, 2^80085346681 is an apocalyptic number.

It is an amenable number.

80085346681 is a deficient number, since it is larger than the sum of its proper divisors (1511044331).

80085346681 is a wasteful number, since it uses less digits than its factorization.

80085346681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511044330.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 80085346681 in words is "eighty billion, eighty-five million, three hundred forty-six thousand, six hundred eighty-one".