211458990318 has 16 divisors (see below), whose sum is σ = 427023981696. Its totient is φ = 69801996600.

The previous prime is 211458990299. The next prime is 211458990319. The reversal of 211458990318 is 813099854112.

211458990318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211458990318² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211458990319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171082708 + ... + 171083943.

It is an arithmetic number, because the mean of its divisors is an integer number (26688998856).

Almost surely, 2^211458990318 is an apocalyptic number.

211458990318 is an abundant number, since it is smaller than the sum of its proper divisors (215564991378).

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

211458990318 is a wasteful number, since it uses less digits than its factorization.

211458990318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342166759.

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 211458990318 in words is "two hundred eleven billion, four hundred fifty-eight million, nine hundred ninety thousand, three hundred eighteen".