80280112646889 has 81 divisors (see below), whose sum is σ = 119014520140893. Its totient is φ = 52146286863984.

The previous prime is 80280112646857. The next prime is 80280112646989. The reversal of 80280112646889 is 98864621108208.

The square root of 80280112646889 is 8959917.

It is a perfect power (a square), and thus also a powerful number.

80280112646889 is a `hidden beast` number, since 8 + 0 + 2 + 80 + 1 + 12 + 6 + 468 + 89 = 666.

It is not a de Polignac number, because 80280112646889 - 2⁵ = 80280112646857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80280112646989) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 353656883794 + ... + 353656884020.

Almost surely, 2^{80280112646889} is an apocalyptic number.

80280112646889 is the 8959917-th square number.

80280112646889 is the 4479959-th centered octagonal number.

It is an amenable number.

80280112646889 is a deficient number, since it is larger than the sum of its proper divisors (38734407494004).

80280112646889 is an frugal number, since it uses more digits than its factorization.

80280112646889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 63.

The spelling of 80280112646889 in words is "eighty trillion, two hundred eighty billion, one hundred twelve million, six hundred forty-six thousand, eight hundred eighty-nine".