6501573216 has 240 divisors, whose sum is σ = 20349750960. Its totient is φ = 2030469120.

The previous prime is 6501573179. The next prime is 6501573217. The reversal of 6501573216 is 6123751056.

6501573216 is a `hidden beast` number, since 65 + 0 + 1 + 573 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501573217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4776376 + ... + 4777736.

It is an arithmetic number, because the mean of its divisors is an integer number (84790629).

Almost surely, 2^6501573216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6501573216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10174875480).

6501573216 is an abundant number, since it is smaller than the sum of its proper divisors (13848177744).

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

6501573216 is a wasteful number, since it uses less digits than its factorization.

6501573216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 6501573216 is about 80632.3335641478. Note that the first 3 decimals coincide. The cubic root of 6501573216 is about 1866.4061315520.

The spelling of 6501573216 in words is "six billion, five hundred one million, five hundred seventy-three thousand, two hundred sixteen".