405442431613 has 2 divisors, whose sum is σ = 405442431614. Its totient is φ = 405442431612.

The previous prime is 405442431553. The next prime is 405442431629. The reversal of 405442431613 is 316134244504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286667080569 + 118775351044 = 535413^2 + 344638^2 .

It is a cyclic number.

It is not a de Polignac number, because 405442431613 - 2²¹ = 405440334461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405442431643) 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, 202721215806 + 202721215807.

It is an arithmetic number, because the mean of its divisors is an integer number (202721215807).

Almost surely, 2^405442431613 is an apocalyptic number.

It is an amenable number.

405442431613 is a deficient number, since it is larger than the sum of its proper divisors (1).

405442431613 is an equidigital number, since it uses as much as digits as its factorization.

405442431613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 405442431613 in words is "four hundred five billion, four hundred forty-two million, four hundred thirty-one thousand, six hundred thirteen".