80959028089 has 27 divisors (see below), whose sum is σ = 86213845263. Its totient is φ = 76018112544.

The previous prime is 80959028083. The next prime is 80959028099. The reversal of 80959028089 is 98082095908.

It is a happy number.

The square root of 80959028089 is 284533.

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

It can be written as a sum of positive squares in only one way, i.e., 15545850489 + 65413177600 = 124683^2 + 255760^2 .

It is not a de Polignac number, because 80959028089 - 2¹⁷ = 80958897017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80959028083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 582438982 + ... + 582439120.

Almost surely, 2^80959028089 is an apocalyptic number.

80959028089 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80959028089 is the 284533-rd square number.

80959028089 is the 142267-th centered octagonal number.

It is an amenable number.

80959028089 is a deficient number, since it is larger than the sum of its proper divisors (5254817174).

80959028089 is an frugal number, since it uses more digits than its factorization.

80959028089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 80959028089 in words is "eighty billion, nine hundred fifty-nine million, twenty-eight thousand, eighty-nine".