423745043573 has 2 divisors, whose sum is σ = 423745043574. Its totient is φ = 423745043572.

The previous prime is 423745043507. The next prime is 423745043591. The reversal of 423745043573 is 375340547324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240956302129 + 182788741444 = 490873^2 + 427538^2 .

It is a cyclic number.

It is not a de Polignac number, because 423745043573 - 2⁸ = 423745043317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423745043503) 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, 211872521786 + 211872521787.

It is an arithmetic number, because the mean of its divisors is an integer number (211872521787).

Almost surely, 2^423745043573 is an apocalyptic number.

It is an amenable number.

423745043573 is a deficient number, since it is larger than the sum of its proper divisors (1).

423745043573 is an equidigital number, since it uses as much as digits as its factorization.

423745043573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 47.

The spelling of 423745043573 in words is "four hundred twenty-three billion, seven hundred forty-five million, forty-three thousand, five hundred seventy-three".