80665110107818 has 8 divisors (see below), whose sum is σ = 121002916637700. Its totient is φ = 40330804561920.

The previous prime is 80665110107783. The next prime is 80665110107819. The reversal of 80665110107818 is 81870101156608.

It can be written as a sum of positive squares in 2 ways, for example, as 59257156349689 + 21407953758129 = 7697867^2 + 4626873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80665110107818² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80665110107819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875188393 + ... + 875280556.

Almost surely, 2^{80665110107818} is an apocalyptic number.

80665110107818 is a deficient number, since it is larger than the sum of its proper divisors (40337806529882).

80665110107818 is a wasteful number, since it uses less digits than its factorization.

80665110107818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750491992.

The product of its (nonzero) digits is 645120, while the sum is 52.

The spelling of 80665110107818 in words is "eighty trillion, six hundred sixty-five billion, one hundred ten million, one hundred seven thousand, eight hundred eighteen".