80311730688 has 300 divisors, whose sum is σ = 278852648382. Its totient is φ = 22945628160.

The previous prime is 80311730677. The next prime is 80311730693. The reversal of 80311730688 is 88603711308.

It can be written as a sum of positive squares in only one way, i.e., 80229429504 + 82301184 = 283248^2 + 9072^2 .

It is a super-2 number, since 2×80311730688² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2012368 + ... + 2051888.

Almost surely, 2^80311730688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80311730688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139426324191).

80311730688 is an abundant number, since it is smaller than the sum of its proper divisors (198540917694).

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

80311730688 is an equidigital number, since it uses as much as digits as its factorization.

80311730688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39565 (or 39533 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 80311730688 in words is "eighty billion, three hundred eleven million, seven hundred thirty thousand, six hundred eighty-eight".