211449621743 has 6 divisors (see below), whose sum is σ = 218992415304. Its totient is φ = 204158254664.

The previous prime is 211449621739. The next prime is 211449621793. The reversal of 211449621743 is 347126944112.

It is not a de Polignac number, because 211449621743 - 2² = 211449621739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211449621694 and 211449621703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211449621793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125712371 + ... + 125714052.

It is an arithmetic number, because the mean of its divisors is an integer number (36498735884).

Almost surely, 2^211449621743 is an apocalyptic number.

211449621743 is a deficient number, since it is larger than the sum of its proper divisors (7542793561).

211449621743 is an equidigital number, since it uses as much as digits as its factorization.

211449621743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251426481 (or 251426452 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The spelling of 211449621743 in words is "two hundred eleven billion, four hundred forty-nine million, six hundred twenty-one thousand, seven hundred forty-three".