8557166955 has 8 divisors (see below), whose sum is σ = 13691467152. Its totient is φ = 4563822368.

The previous prime is 8557166939. The next prime is 8557166957. The reversal of 8557166955 is 5596617558.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8557166955 - 2⁴ = 8557166939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8557166895 and 8557166904.

It is not an unprimeable number, because it can be changed into a prime (8557166957) 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, 285238884 + ... + 285238913.

It is an arithmetic number, because the mean of its divisors is an integer number (1711433394).

Almost surely, 2^8557166955 is an apocalyptic number.

8557166955 is a deficient number, since it is larger than the sum of its proper divisors (5134300197).

8557166955 is a wasteful number, since it uses less digits than its factorization.

8557166955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570477805.

The product of its digits is 11340000, while the sum is 57.

The square root of 8557166955 is about 92504.9563807259. The cubic root of 8557166955 is about 2045.3925438508.

The spelling of 8557166955 in words is "eight billion, five hundred fifty-seven million, one hundred sixty-six thousand, nine hundred fifty-five".