213406004650466 has 16 divisors (see below), whose sum is σ = 331776754081080. Its totient is φ = 102866668243200.

The previous prime is 213406004650441. The next prime is 213406004650469. The reversal of 213406004650466 is 664056400604312.

It can be written as a sum of positive squares in 4 ways, for example, as 210963395127241 + 2442609523225 = 14524579^2 + 1562885^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213406004650466.

It is not an unprimeable number, because it can be changed into a prime (213406004650469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13228730135 + ... + 13228746266.

Almost surely, 2^{213406004650466} is an apocalyptic number.

213406004650466 is a deficient number, since it is larger than the sum of its proper divisors (118370749430614).

213406004650466 is a wasteful number, since it uses less digits than its factorization.

213406004650466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26457476549.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 213406004650466 in words is "two hundred thirteen trillion, four hundred six billion, four million, six hundred fifty thousand, four hundred sixty-six".