64544224101011 has 32 divisors (see below), whose sum is σ = 69441665679360. Its totient is φ = 59814635188896.

The previous prime is 64544224100989. The next prime is 64544224101017. The reversal of 64544224101011 is 11010142244546.

It is a cyclic number.

It is not a de Polignac number, because 64544224101011 - 2⁴² = 60146177589907 is a prime.

It is a super-2 number, since 2×64544224101011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64544224101017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72217310 + ... + 73105596.

It is an arithmetic number, because the mean of its divisors is an integer number (2170052052480).

Almost surely, 2^{64544224101011} is an apocalyptic number.

64544224101011 is a deficient number, since it is larger than the sum of its proper divisors (4897441578349).

64544224101011 is a wasteful number, since it uses less digits than its factorization.

64544224101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888863.

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 64544224101011 its reverse (11010142244546), we get a palindrome (75554366345557).

The spelling of 64544224101011 in words is "sixty-four trillion, five hundred forty-four billion, two hundred twenty-four million, one hundred one thousand, eleven".