6561022170 has 16 divisors (see below), whose sum is σ = 15746453280. Its totient is φ = 1749605904.

The previous prime is 6561022129. The next prime is 6561022189. The reversal of 6561022170 is 712201656.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 218700739 = 6561022170 / (6 + 5 + 6 + 1 + 0 + 2 + 2 + 1 + 7 + 0).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 109350340 + ... + 109350399.

It is an arithmetic number, because the mean of its divisors is an integer number (984153330).

Almost surely, 2^6561022170 is an apocalyptic number.

6561022170 is an abundant number, since it is smaller than the sum of its proper divisors (9185431110).

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

6561022170 is a wasteful number, since it uses less digits than its factorization.

6561022170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218700749.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6561022170 is about 81000.1368517362. The cubic root of 6561022170 is about 1872.0775493615.

The spelling of 6561022170 in words is "six billion, five hundred sixty-one million, twenty-two thousand, one hundred seventy".