23364535220561 has 2 divisors, whose sum is σ = 23364535220562. Its totient is φ = 23364535220560.

The previous prime is 23364535220527. The next prime is 23364535220569. The reversal of 23364535220561 is 16502253546332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22805209230400 + 559325990161 = 4775480^2 + 747881^2 .

It is a cyclic number.

It is not a de Polignac number, because 23364535220561 - 2¹⁸ = 23364534958417 is a prime.

It is not a weakly prime, because it can be changed into another prime (23364535220569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11682267610280 + 11682267610281.

It is an arithmetic number, because the mean of its divisors is an integer number (11682267610281).

Almost surely, 2^{23364535220561} is an apocalyptic number.

It is an amenable number.

23364535220561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23364535220561 is an equidigital number, since it uses as much as digits as its factorization.

23364535220561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 47.

Adding to 23364535220561 its reverse (16502253546332), we get a palindrome (39866788766893).

The spelling of 23364535220561 in words is "twenty-three trillion, three hundred sixty-four billion, five hundred thirty-five million, two hundred twenty thousand, five hundred sixty-one".