405221331440873 has 2 divisors, whose sum is σ = 405221331440874. Its totient is φ = 405221331440872.

The previous prime is 405221331440843. The next prime is 405221331440941. The reversal of 405221331440873 is 378044133122504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212787920911504 + 192433410529369 = 14587252^2 + 13872037^2 .

It is a cyclic number.

It is not a de Polignac number, because 405221331440873 - 2⁸ = 405221331440617 is a prime.

It is not a weakly prime, because it can be changed into another prime (405221331440843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202610665720436 + 202610665720437.

It is an arithmetic number, because the mean of its divisors is an integer number (202610665720437).

Almost surely, 2^{405221331440873} is an apocalyptic number.

It is an amenable number.

405221331440873 is a deficient number, since it is larger than the sum of its proper divisors (1).

405221331440873 is an equidigital number, since it uses as much as digits as its factorization.

405221331440873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 47.

The spelling of 405221331440873 in words is "four hundred five trillion, two hundred twenty-one billion, three hundred thirty-one million, four hundred forty thousand, eight hundred seventy-three".