64522357768209 has 32 divisors (see below), whose sum is σ = 95885433667584. Its totient is φ = 38265090353280.

The previous prime is 64522357768159. The next prime is 64522357768217. The reversal of 64522357768209 is 90286775322546.

It is not a de Polignac number, because 64522357768209 - 2²⁴ = 64522340990993 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 64522357768209.

It is not an unprimeable number, because it can be changed into a prime (64522357768279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105142389 + ... + 105754274.

It is an arithmetic number, because the mean of its divisors is an integer number (2996419802112).

Almost surely, 2^{64522357768209} is an apocalyptic number.

It is an amenable number.

64522357768209 is a deficient number, since it is larger than the sum of its proper divisors (31363075899375).

64522357768209 is a wasteful number, since it uses less digits than its factorization.

64522357768209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210896877.

The product of its (nonzero) digits is 304819200, while the sum is 66.

The spelling of 64522357768209 in words is "sixty-four trillion, five hundred twenty-two billion, three hundred fifty-seven million, seven hundred sixty-eight thousand, two hundred nine".