211068687829 has 2 divisors, whose sum is σ = 211068687830. Its totient is φ = 211068687828.

The previous prime is 211068687827. The next prime is 211068687853. The reversal of 211068687829 is 928786860112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173276550225 + 37792137604 = 416265^2 + 194402^2 .

It is a cyclic number.

It is not a de Polignac number, because 211068687829 - 2¹ = 211068687827 is a prime.

Together with 211068687827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211068687827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105534343914 + 105534343915.

It is an arithmetic number, because the mean of its divisors is an integer number (105534343915).

Almost surely, 2^211068687829 is an apocalyptic number.

It is an amenable number.

211068687829 is a deficient number, since it is larger than the sum of its proper divisors (1).

211068687829 is an equidigital number, since it uses as much as digits as its factorization.

211068687829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 211068687829 in words is "two hundred eleven billion, sixty-eight million, six hundred eighty-seven thousand, eight hundred twenty-nine".