404545035421 has 2 divisors, whose sum is σ = 404545035422. Its totient is φ = 404545035420.

The previous prime is 404545035383. The next prime is 404545035457. The reversal of 404545035421 is 124530545404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317210009796 + 87335025625 = 563214^2 + 295525^2 .

It is a cyclic number.

It is not a de Polignac number, because 404545035421 - 2⁹ = 404545034909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404545075421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202272517710 + 202272517711.

It is an arithmetic number, because the mean of its divisors is an integer number (202272517711).

Almost surely, 2^404545035421 is an apocalyptic number.

It is an amenable number.

404545035421 is a deficient number, since it is larger than the sum of its proper divisors (1).

404545035421 is an equidigital number, since it uses as much as digits as its factorization.

404545035421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 404545035421 in words is "four hundred four billion, five hundred forty-five million, thirty-five thousand, four hundred twenty-one".