212646762773 has 2 divisors, whose sum is σ = 212646762774. Its totient is φ = 212646762772.

The previous prime is 212646762749. The next prime is 212646762787. The reversal of 212646762773 is 377267646212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118276151569 + 94370611204 = 343913^2 + 307198^2 .

It is a cyclic number.

It is not a de Polignac number, because 212646762773 - 2³⁰ = 211573020949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212646762373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106323381386 + 106323381387.

It is an arithmetic number, because the mean of its divisors is an integer number (106323381387).

Almost surely, 2^212646762773 is an apocalyptic number.

It is an amenable number.

212646762773 is a deficient number, since it is larger than the sum of its proper divisors (1).

212646762773 is an equidigital number, since it uses as much as digits as its factorization.

212646762773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 53.

The spelling of 212646762773 in words is "two hundred twelve billion, six hundred forty-six million, seven hundred sixty-two thousand, seven hundred seventy-three".