213406004650442 has 16 divisors (see below), whose sum is σ = 322078679422080. Its totient is φ = 106046468475552.

The previous prime is 213406004650441. The next prime is 213406004650469. The reversal of 213406004650442 is 244056400604312.

It is a super-2 number, since 2×213406004650442² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213406004650442.

It is not an unprimeable number, because it can be changed into a prime (213406004650441) 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, 12265934 + ... + 24026342.

It is an arithmetic number, because the mean of its divisors is an integer number (20129917463880).

Almost surely, 2^{213406004650442} is an apocalyptic number.

213406004650442 is a deficient number, since it is larger than the sum of its proper divisors (108672674771638).

213406004650442 is a wasteful number, since it uses less digits than its factorization.

213406004650442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816237.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 213406004650442 in words is "two hundred thirteen trillion, four hundred six billion, four million, six hundred fifty thousand, four hundred forty-two".