212045464517 has 2 divisors, whose sum is σ = 212045464518. Its totient is φ = 212045464516.

The previous prime is 212045464511. The next prime is 212045464583. The reversal of 212045464517 is 715464540212.

It is a happy number.

212045464517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114221017156 + 97824447361 = 337966^2 + 312769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212045464517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212045464511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106022732258 + 106022732259.

It is an arithmetic number, because the mean of its divisors is an integer number (106022732259).

Almost surely, 2^212045464517 is an apocalyptic number.

It is an amenable number.

212045464517 is a deficient number, since it is larger than the sum of its proper divisors (1).

212045464517 is an equidigital number, since it uses as much as digits as its factorization.

212045464517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 212045464517 in words is "two hundred twelve billion, forty-five million, four hundred sixty-four thousand, five hundred seventeen".