212453411549 has 2 divisors, whose sum is σ = 212453411550. Its totient is φ = 212453411548.

The previous prime is 212453411507. The next prime is 212453411587. The reversal of 212453411549 is 945114354212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173897340100 + 38556071449 = 417010^2 + 196357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212453411549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212453411249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106226705774 + 106226705775.

It is an arithmetic number, because the mean of its divisors is an integer number (106226705775).

Almost surely, 2^212453411549 is an apocalyptic number.

It is an amenable number.

212453411549 is a deficient number, since it is larger than the sum of its proper divisors (1).

212453411549 is an equidigital number, since it uses as much as digits as its factorization.

212453411549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The spelling of 212453411549 in words is "two hundred twelve billion, four hundred fifty-three million, four hundred eleven thousand, five hundred forty-nine".