80165444688 has 200 divisors, whose sum is σ = 265535990720. Its totient is φ = 22872637440.

The previous prime is 80165444687. The next prime is 80165444699. The reversal of 80165444688 is 88644456108.

It is a happy number.

80165444688 is a `hidden beast` number, since 8 + 0 + 16 + 544 + 4 + 6 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80165444687) 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 39 ways as a sum of consecutive naturals, for example, 6970623 + ... + 6982113.

Almost surely, 2^80165444688 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 80165444688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132767995360).

80165444688 is an abundant number, since it is smaller than the sum of its proper divisors (185370546032).

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

80165444688 is a wasteful number, since it uses less digits than its factorization.

80165444688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12287 (or 12272 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 80165444688 in words is "eighty billion, one hundred sixty-five million, four hundred forty-four thousand, six hundred eighty-eight".