213238767629 has 2 divisors, whose sum is σ = 213238767630. Its totient is φ = 213238767628.

The previous prime is 213238767617. The next prime is 213238767661. The reversal of 213238767629 is 926767832312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179011917604 + 34226850025 = 423098^2 + 185005^2 .

It is a cyclic number.

It is not a de Polignac number, because 213238767629 - 2³² = 208943800333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213238763629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106619383814 + 106619383815.

It is an arithmetic number, because the mean of its divisors is an integer number (106619383815).

Almost surely, 2^213238767629 is an apocalyptic number.

It is an amenable number.

213238767629 is a deficient number, since it is larger than the sum of its proper divisors (1).

213238767629 is an equidigital number, since it uses as much as digits as its factorization.

213238767629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 56.

The spelling of 213238767629 in words is "two hundred thirteen billion, two hundred thirty-eight million, seven hundred sixty-seven thousand, six hundred twenty-nine".