211324414549 has 2 divisors, whose sum is σ = 211324414550. Its totient is φ = 211324414548.

The previous prime is 211324414541. The next prime is 211324414577. The reversal of 211324414549 is 945414423112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174959831524 + 36364583025 = 418282^2 + 190695^2 .

It is a cyclic number.

It is not a de Polignac number, because 211324414549 - 2³ = 211324414541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211324414541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105662207274 + 105662207275.

It is an arithmetic number, because the mean of its divisors is an integer number (105662207275).

Almost surely, 2^211324414549 is an apocalyptic number.

It is an amenable number.

211324414549 is a deficient number, since it is larger than the sum of its proper divisors (1).

211324414549 is an equidigital number, since it uses as much as digits as its factorization.

211324414549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The spelling of 211324414549 in words is "two hundred eleven billion, three hundred twenty-four million, four hundred fourteen thousand, five hundred forty-nine".