80105757220 has 24 divisors (see below), whose sum is σ = 170526505464. Its totient is φ = 31603366656.

The previous prime is 80105757217. The next prime is 80105757227. The reversal of 80105757220 is 2275750108.

It can be written as a sum of positive squares in 4 ways, for example, as 30194622756 + 49911134464 = 173766^2 + 223408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80105757220.

It is not an unprimeable number, because it can be changed into a prime (80105757227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27432019 + ... + 27434938.

It is an arithmetic number, because the mean of its divisors is an integer number (7105271061).

Almost surely, 2^80105757220 is an apocalyptic number.

It is an amenable number.

80105757220 is an abundant number, since it is smaller than the sum of its proper divisors (90420748244).

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

80105757220 is a wasteful number, since it uses less digits than its factorization.

80105757220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54867039 (or 54867037 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The spelling of 80105757220 in words is "eighty billion, one hundred five million, seven hundred fifty-seven thousand, two hundred twenty".