80554664865 has 32 divisors (see below), whose sum is σ = 129366432000. Its totient is φ = 42802974720.

The previous prime is 80554664837. The next prime is 80554664867. The reversal of 80554664865 is 56846645508.

It is not a de Polignac number, because 80554664865 - 2¹¹ = 80554662817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80554664867) 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 31 ways as a sum of consecutive naturals, for example, 14780661 + ... + 14786109.

It is an arithmetic number, because the mean of its divisors is an integer number (4042701000).

Almost surely, 2^80554664865 is an apocalyptic number.

It is an amenable number.

80554664865 is a deficient number, since it is larger than the sum of its proper divisors (48811767135).

80554664865 is a wasteful number, since it uses less digits than its factorization.

80554664865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8937.

The product of its (nonzero) digits is 27648000, while the sum is 57.

The spelling of 80554664865 in words is "eighty billion, five hundred fifty-four million, six hundred sixty-four thousand, eight hundred sixty-five".