6505550161 has 8 divisors (see below), whose sum is σ = 7405527744. Its totient is φ = 5656999920.

The previous prime is 6505550113. The next prime is 6505550189. The reversal of 6505550161 is 1610555056.

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

It is not a de Polignac number, because 6505550161 - 2⁷ = 6505550033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6505550861) 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, 12856566 + ... + 12857071.

It is an arithmetic number, because the mean of its divisors is an integer number (925690968).

Almost surely, 2^6505550161 is an apocalyptic number.

It is an amenable number.

6505550161 is a deficient number, since it is larger than the sum of its proper divisors (899977583).

6505550161 is a wasteful number, since it uses less digits than its factorization.

6505550161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25713671.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 6505550161 is about 80656.9907757536. The cubic root of 6505550161 is about 1866.7866077516.

The spelling of 6505550161 in words is "six billion, five hundred five million, five hundred fifty thousand, one hundred sixty-one".