211444343253 has 48 divisors (see below), whose sum is σ = 358873010496. Its totient is φ = 118271301120.

The previous prime is 211444343251. The next prime is 211444343261. The reversal of 211444343253 is 352343444112.

211444343253 is a `hidden beast` number, since 2 + 1 + 144 + 434 + 32 + 53 = 666.

It is not a de Polignac number, because 211444343253 - 2¹ = 211444343251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211444343251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12329901 + ... + 12347037.

It is an arithmetic number, because the mean of its divisors is an integer number (7476521052).

Almost surely, 2^211444343253 is an apocalyptic number.

It is an amenable number.

211444343253 is a deficient number, since it is larger than the sum of its proper divisors (147428667243).

211444343253 is a wasteful number, since it uses less digits than its factorization.

211444343253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26754 (or 26751 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 211444343253 its reverse (352343444112), we get a palindrome (563787787365).

The spelling of 211444343253 in words is "two hundred eleven billion, four hundred forty-four million, three hundred forty-three thousand, two hundred fifty-three".