80128286861 has 8 divisors (see below), whose sum is σ = 92519259840. Its totient is φ = 67973332608.

The previous prime is 80128286851. The next prime is 80128286869. The reversal of 80128286861 is 16868282108.

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 80128286861 - 2³⁴ = 62948417677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80128286869) 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, 59003951 + ... + 59005308.

It is an arithmetic number, because the mean of its divisors is an integer number (11564907480).

Almost surely, 2^80128286861 is an apocalyptic number.

It is an amenable number.

80128286861 is a deficient number, since it is larger than the sum of its proper divisors (12390972979).

80128286861 is a wasteful number, since it uses less digits than its factorization.

80128286861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118009363.

The product of its (nonzero) digits is 589824, while the sum is 50.

The spelling of 80128286861 in words is "eighty billion, one hundred twenty-eight million, two hundred eighty-six thousand, eight hundred sixty-one".