80908389136 has 135 divisors (see below), whose sum is σ = 172075230559. Its totient is φ = 36845737984.

The previous prime is 80908389113. The next prime is 80908389169. The reversal of 80908389136 is 63198380908.

It is a happy number.

The square root of 80908389136 is 284444.

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

It can be written as a sum of positive squares in 4 ways, for example, as 106915600 + 80801473536 = 10340^2 + 284256^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 909082980 + ... + 909083068.

Almost surely, 2^80908389136 is an apocalyptic number.

80908389136 is the 284444-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80908389136

80908389136 is an abundant number, since it is smaller than the sum of its proper divisors (91166841423).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80908389136 is an equidigital number, since it uses as much as digits as its factorization.

80908389136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 80908389136 in words is "eighty billion, nine hundred eight million, three hundred eighty-nine thousand, one hundred thirty-six".