406520196361 has 2 divisors, whose sum is σ = 406520196362. Its totient is φ = 406520196360.

The previous prime is 406520196301. The next prime is 406520196367. The reversal of 406520196361 is 163691025604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368866734336 + 37653462025 = 607344^2 + 194045^2 .

It is a cyclic number.

It is not a de Polignac number, because 406520196361 - 2¹¹ = 406520194313 is a prime.

It is not a weakly prime, because it can be changed into another prime (406520196367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203260098180 + 203260098181.

It is an arithmetic number, because the mean of its divisors is an integer number (203260098181).

Almost surely, 2^406520196361 is an apocalyptic number.

It is an amenable number.

406520196361 is a deficient number, since it is larger than the sum of its proper divisors (1).

406520196361 is an equidigital number, since it uses as much as digits as its factorization.

406520196361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 406520196361 in words is "four hundred six billion, five hundred twenty million, one hundred ninety-six thousand, three hundred sixty-one".