6450572165 has 8 divisors (see below), whose sum is σ = 7741138680. Its totient is φ = 5160156352.

The previous prime is 6450572113. The next prime is 6450572207. The reversal of 6450572165 is 5612750546.

It can be written as a sum of positive squares in 4 ways, for example, as 991431169 + 5459140996 = 31487^2 + 73886^2 .

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 6450572165 - 2¹⁸ = 6450310021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107027 + ... + 156063.

It is an arithmetic number, because the mean of its divisors is an integer number (967642335).

Almost surely, 2^6450572165 is an apocalyptic number.

It is an amenable number.

6450572165 is a deficient number, since it is larger than the sum of its proper divisors (1290566515).

6450572165 is a wasteful number, since it uses less digits than its factorization.

6450572165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75351.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 6450572165 is about 80315.4540857487. The cubic root of 6450572165 is about 1861.5130253541.

The spelling of 6450572165 in words is "six billion, four hundred fifty million, five hundred seventy-two thousand, one hundred sixty-five".