653326140221 has 2 divisors, whose sum is σ = 653326140222. Its totient is φ = 653326140220.

The previous prime is 653326140209. The next prime is 653326140241. The reversal of 653326140221 is 122041623356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468559416196 + 184766724025 = 684514^2 + 429845^2 .

It is a cyclic number.

It is not a de Polignac number, because 653326140221 - 2¹⁸ = 653325878077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653326140241) 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 as a sum of consecutive naturals, namely, 326663070110 + 326663070111.

It is an arithmetic number, because the mean of its divisors is an integer number (326663070111).

Almost surely, 2^653326140221 is an apocalyptic number.

It is an amenable number.

653326140221 is a deficient number, since it is larger than the sum of its proper divisors (1).

653326140221 is an equidigital number, since it uses as much as digits as its factorization.

653326140221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 653326140221 its reverse (122041623356), we get a palindrome (775367763577).

The spelling of 653326140221 in words is "six hundred fifty-three billion, three hundred twenty-six million, one hundred forty thousand, two hundred twenty-one".