8556380161 has 8 divisors (see below), whose sum is σ = 9804939584. Its totient is φ = 7314375600.

The previous prime is 8556380117. The next prime is 8556380191. The reversal of 8556380161 is 1610836558.

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

It is not a de Polignac number, because 8556380161 - 2¹¹ = 8556378113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8556380191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635915 + ... + 1641136.

It is an arithmetic number, because the mean of its divisors is an integer number (1225617448).

It is a Proth number, since it is equal to 255 ⋅ 2²⁵ + 1 and 255 < 2²⁵.

Almost surely, 2^8556380161 is an apocalyptic number.

It is an amenable number.

8556380161 is a deficient number, since it is larger than the sum of its proper divisors (1248559423).

8556380161 is a wasteful number, since it uses less digits than its factorization.

8556380161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277431.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 8556380161 is about 92500.7035702972. The cubic root of 8556380161 is about 2045.3298536359.

The spelling of 8556380161 in words is "eight billion, five hundred fifty-six million, three hundred eighty thousand, one hundred sixty-one".