8649552161 has 16 divisors (see below), whose sum is σ = 8880580800. Its totient is φ = 8421739200.

The previous prime is 8649552137. The next prime is 8649552187. The reversal of 8649552161 is 1612559468.

It is a cyclic number.

It is not a de Polignac number, because 8649552161 - 2⁶ = 8649552097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8649552361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871146 + ... + 2874156.

It is an arithmetic number, because the mean of its divisors is an integer number (555036300).

Almost surely, 2^8649552161 is an apocalyptic number.

It is an amenable number.

8649552161 is a deficient number, since it is larger than the sum of its proper divisors (231028639).

8649552161 is a wasteful number, since it uses less digits than its factorization.

8649552161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its digits is 518400, while the sum is 47.

The square root of 8649552161 is about 93002.9685601487. The cubic root of 8649552161 is about 2052.7270596126.

The spelling of 8649552161 in words is "eight billion, six hundred forty-nine million, five hundred fifty-two thousand, one hundred sixty-one".