80081776168 has 8 divisors (see below), whose sum is σ = 150153330330. Its totient is φ = 40040888080.

The previous prime is 80081776163. The next prime is 80081776169. The reversal of 80081776168 is 86167718008.

It can be written as a sum of positive squares in only one way, i.e., 58807220004 + 21274556164 = 242502^2 + 145858^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (80081776163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005111003 + ... + 5005111018.

Almost surely, 2^80081776168 is an apocalyptic number.

It is an amenable number.

80081776168 is a deficient number, since it is larger than the sum of its proper divisors (70071554162).

80081776168 is a wasteful number, since it uses less digits than its factorization.

80081776168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010222027 (or 10010222023 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 80081776168 in words is "eighty billion, eighty-one million, seven hundred seventy-six thousand, one hundred sixty-eight".