211853619473 has 2 divisors, whose sum is σ = 211853619474. Its totient is φ = 211853619472.

The previous prime is 211853619469. The next prime is 211853619479. The reversal of 211853619473 is 374916358112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201019515904 + 10834103569 = 448352^2 + 104087^2 .

It is a cyclic number.

It is not a de Polignac number, because 211853619473 - 2² = 211853619469 is a prime.

It is not a weakly prime, because it can be changed into another prime (211853619479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105926809736 + 105926809737.

It is an arithmetic number, because the mean of its divisors is an integer number (105926809737).

Almost surely, 2^211853619473 is an apocalyptic number.

It is an amenable number.

211853619473 is a deficient number, since it is larger than the sum of its proper divisors (1).

211853619473 is an equidigital number, since it uses as much as digits as its factorization.

211853619473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The spelling of 211853619473 in words is "two hundred eleven billion, eight hundred fifty-three million, six hundred nineteen thousand, four hundred seventy-three".