211404316664530 has 96 divisors (see below), whose sum is σ = 442879411529520. Its totient is φ = 72350733312000.

The previous prime is 211404316664521. The next prime is 211404316664531. The reversal of 211404316664530 is 35466613404112.

It can be written as a sum of positive squares in 8 ways, for example, as 198665106609321 + 12739210055209 = 14094861^2 + 3569203^2 .

It is not an unprimeable number, because it can be changed into a prime (211404316664531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1390476556 + ... + 1390628584.

Almost surely, 2^{211404316664530} is an apocalyptic number.

211404316664530 is an abundant number, since it is smaller than the sum of its proper divisors (231475094864990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211404316664530 is a wasteful number, since it uses less digits than its factorization.

211404316664530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219676 (or 219665 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 211404316664530 in words is "two hundred eleven trillion, four hundred four billion, three hundred sixteen million, six hundred sixty-four thousand, five hundred thirty".