80168442072 has 32 divisors (see below), whose sum is σ = 210969585600. Its totient is φ = 25316349984.

The previous prime is 80168442071. The next prime is 80168442119. The reversal of 80168442072 is 27024486108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80168442071) 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, 87903538 + ... + 87904449.

It is an arithmetic number, because the mean of its divisors is an integer number (6592799550).

Almost surely, 2^80168442072 is an apocalyptic number.

It is an amenable number.

80168442072 is an abundant number, since it is smaller than the sum of its proper divisors (130801143528).

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

80168442072 is a wasteful number, since it uses less digits than its factorization.

80168442072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175808015 (or 175808011 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 80168442072 in words is "eighty billion, one hundred sixty-eight million, four hundred forty-two thousand, seventy-two".