866158730278160 has 40 divisors (see below), whose sum is σ = 2196893506798656. Its totient is φ = 314966811009920.

The previous prime is 866158730278123. The next prime is 866158730278211. The reversal of 866158730278160 is 61872037851668.

866158730278160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492135641324 + ... + 492135643083.

Almost surely, 2^{866158730278160} is an apocalyptic number.

866158730278160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866158730278160 is an abundant number, since it is smaller than the sum of its proper divisors (1330734776520496).

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

866158730278160 is a wasteful number, since it uses less digits than its factorization.

866158730278160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984271284431 (or 984271284425 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 68.

The spelling of 866158730278160 in words is "eight hundred sixty-six trillion, one hundred fifty-eight billion, seven hundred thirty million, two hundred seventy-eight thousand, one hundred sixty".