80135984889 has 27 divisors (see below), whose sum is σ = 116827825413. Its totient is φ = 52931991672.

The previous prime is 80135984881. The next prime is 80135984927. The reversal of 80135984889 is 98848953108.

It is a happy number.

The square root of 80135984889 is 283083.

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

It is not a de Polignac number, because 80135984889 - 2³ = 80135984881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80135984881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 107854252 + ... + 107854994.

Almost surely, 2^80135984889 is an apocalyptic number.

80135984889 is the 283083-rd square number.

80135984889 is the 141542-nd centered octagonal number.

It is an amenable number.

80135984889 is a deficient number, since it is larger than the sum of its proper divisors (36691840524).

80135984889 is an frugal number, since it uses more digits than its factorization.

80135984889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

It can be divided in two parts, 80135 and 984889, that added together give a square (1065024 = 1032²).

The spelling of 80135984889 in words is "eighty billion, one hundred thirty-five million, nine hundred eighty-four thousand, eight hundred eighty-nine".