212862635773 has 2 divisors, whose sum is σ = 212862635774. Its totient is φ = 212862635772.

The previous prime is 212862635767. The next prime is 212862635831. The reversal of 212862635773 is 377536268212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201347843524 + 11514792249 = 448718^2 + 107307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212862635773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212862635773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212862635753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106431317886 + 106431317887.

It is an arithmetic number, because the mean of its divisors is an integer number (106431317887).

Almost surely, 2^212862635773 is an apocalyptic number.

It is an amenable number.

212862635773 is a deficient number, since it is larger than the sum of its proper divisors (1).

212862635773 is an equidigital number, since it uses as much as digits as its factorization.

212862635773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 52.

The spelling of 212862635773 in words is "two hundred twelve billion, eight hundred sixty-two million, six hundred thirty-five thousand, seven hundred seventy-three".