406215271373 has 2 divisors, whose sum is σ = 406215271374. Its totient is φ = 406215271372.

The previous prime is 406215271349. The next prime is 406215271409. The reversal of 406215271373 is 373172512604.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381841192489 + 24374078884 = 617933^2 + 156122^2 .

It is a cyclic number.

It is not a de Polignac number, because 406215271373 - 2⁸ = 406215271117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406215271373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406215271073) 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, 203107635686 + 203107635687.

It is an arithmetic number, because the mean of its divisors is an integer number (203107635687).

Almost surely, 2^406215271373 is an apocalyptic number.

It is an amenable number.

406215271373 is a deficient number, since it is larger than the sum of its proper divisors (1).

406215271373 is an equidigital number, since it uses as much as digits as its factorization.

406215271373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

Adding to 406215271373 its reverse (373172512604), we get a palindrome (779387783977).

The spelling of 406215271373 in words is "four hundred six billion, two hundred fifteen million, two hundred seventy-one thousand, three hundred seventy-three".