80666539199 has 16 divisors (see below), whose sum is σ = 82390424928. Its totient is φ = 78958927872.

The previous prime is 80666539139. The next prime is 80666539253. The reversal of 80666539199 is 99193566608.

It is a cyclic number.

It is not a de Polignac number, because 80666539199 - 2²⁸ = 80398103743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80666539139) 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 in 15 ways as a sum of consecutive naturals, for example, 12889079 + ... + 12895335.

It is an arithmetic number, because the mean of its divisors is an integer number (5149401558).

Almost surely, 2^80666539199 is an apocalyptic number.

80666539199 is a deficient number, since it is larger than the sum of its proper divisors (1723885729).

80666539199 is a wasteful number, since it uses less digits than its factorization.

80666539199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 80666539199 in words is "eighty billion, six hundred sixty-six million, five hundred thirty-nine thousand, one hundred ninety-nine".