20564601223334 has 32 divisors (see below), whose sum is σ = 37353283799040. Its totient is φ = 8289200665728.

The previous prime is 20564601223301. The next prime is 20564601223367. The reversal of 20564601223334 is 43332210646502.

It is an interprime number because it is at equal distance from previous prime (20564601223301) and next prime (20564601223367).

It is a junction number, because it is equal to n+sod(n) for n = 20564601223291 and 20564601223300.

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 15 ways as a sum of consecutive naturals, for example, 29680412 + ... + 30365375.

It is an arithmetic number, because the mean of its divisors is an integer number (1167290118720).

Almost surely, 2^{20564601223334} is an apocalyptic number.

20564601223334 is a deficient number, since it is larger than the sum of its proper divisors (16788682575706).

20564601223334 is a wasteful number, since it uses less digits than its factorization.

20564601223334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60047252.

The product of its (nonzero) digits is 622080, while the sum is 41.

Adding to 20564601223334 its reverse (43332210646502), we get a palindrome (63896811869836).

The spelling of 20564601223334 in words is "twenty trillion, five hundred sixty-four billion, six hundred one million, two hundred twenty-three thousand, three hundred thirty-four".