80768821860 has 144 divisors (see below), whose sum is σ = 247024028160. Its totient is φ = 21360787200.

The previous prime is 80768821829. The next prime is 80768821901. The reversal of 80768821860 is 6812886708.

It is a junction number, because it is equal to n+sod(n) for n = 80768821797 and 80768821806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19540354 + ... + 19544486.

It is an arithmetic number, because the mean of its divisors is an integer number (1715444640).

Almost surely, 2^80768821860 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 80768821860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123512014080).

80768821860 is an abundant number, since it is smaller than the sum of its proper divisors (166255206300).

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

80768821860 is a wasteful number, since it uses less digits than its factorization.

80768821860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5018 (or 5013 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 80768821860 in words is "eighty billion, seven hundred sixty-eight million, eight hundred twenty-one thousand, eight hundred sixty".