213406004650469 has 2 divisors, whose sum is σ = 213406004650470. Its totient is φ = 213406004650468.

The previous prime is 213406004650441. The next prime is 213406004650481. The reversal of 213406004650469 is 964056400604312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171265328838244 + 42140675812225 = 13086838^2 + 6491585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213406004650469 is a prime.

It is a super-2 number, since 2×213406004650469² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213406004650499) 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, 106703002325234 + 106703002325235.

It is an arithmetic number, because the mean of its divisors is an integer number (106703002325235).

Almost surely, 2^{213406004650469} is an apocalyptic number.

It is an amenable number.

213406004650469 is a deficient number, since it is larger than the sum of its proper divisors (1).

213406004650469 is an equidigital number, since it uses as much as digits as its factorization.

213406004650469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 213406004650469 in words is "two hundred thirteen trillion, four hundred six billion, four million, six hundred fifty thousand, four hundred sixty-nine".