211591085013816 has 32 divisors (see below), whose sum is σ = 556818644774400. Its totient is φ = 66818237372640.

The previous prime is 211591085013793. The next prime is 211591085013821. The reversal of 211591085013816 is 618310580195112.

It is a happy number.

211591085013816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232007768200 + ... + 232007769111.

It is an arithmetic number, because the mean of its divisors is an integer number (17400582649200).

Almost surely, 2^{211591085013816} is an apocalyptic number.

It is an amenable number.

211591085013816 is an abundant number, since it is smaller than the sum of its proper divisors (345227559760584).

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

211591085013816 is a wasteful number, since it uses less digits than its factorization.

211591085013816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464015537339 (or 464015537335 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 51.

The spelling of 211591085013816 in words is "two hundred eleven trillion, five hundred ninety-one billion, eighty-five million, thirteen thousand, eight hundred sixteen".