653445541589 has 2 divisors, whose sum is σ = 653445541590. Its totient is φ = 653445541588.

The previous prime is 653445541543. The next prime is 653445541603. The reversal of 653445541589 is 985145544356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653171076100 + 274465489 = 808190^2 + 16567^2 .

It is a cyclic number.

It is not a de Polignac number, because 653445541589 - 2²⁸ = 653177106133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653445541789) 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, 326722770794 + 326722770795.

It is an arithmetic number, because the mean of its divisors is an integer number (326722770795).

Almost surely, 2^653445541589 is an apocalyptic number.

It is an amenable number.

653445541589 is a deficient number, since it is larger than the sum of its proper divisors (1).

653445541589 is an equidigital number, since it uses as much as digits as its factorization.

653445541589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840000, while the sum is 59.

The spelling of 653445541589 in words is "six hundred fifty-three billion, four hundred forty-five million, five hundred forty-one thousand, five hundred eighty-nine".