80729558806 has 32 divisors (see below), whose sum is σ = 131683980960. Its totient is φ = 36895896576.

The previous prime is 80729558743. The next prime is 80729558873. The reversal of 80729558806 is 60885592708.

It is a super-2 number, since 2×80729558806² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8811580 + ... + 8820736.

It is an arithmetic number, because the mean of its divisors is an integer number (4115124405).

Almost surely, 2^80729558806 is an apocalyptic number.

80729558806 is a deficient number, since it is larger than the sum of its proper divisors (50954422154).

80729558806 is a wasteful number, since it uses less digits than its factorization.

80729558806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12448.

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 80729558806 in words is "eighty billion, seven hundred twenty-nine million, five hundred fifty-eight thousand, eight hundred six".