211051667803793 has 2 divisors, whose sum is σ = 211051667803794. Its totient is φ = 211051667803792.

The previous prime is 211051667803763. The next prime is 211051667803897. The reversal of 211051667803793 is 397308766150112.

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., 189753738162769 + 21297929641024 = 13775113^2 + 4614968^2 .

It is a cyclic number.

It is not a de Polignac number, because 211051667803793 - 2²⁰ = 211051666755217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211051667803703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105525833901896 + 105525833901897.

It is an arithmetic number, because the mean of its divisors is an integer number (105525833901897).

Almost surely, 2^{211051667803793} is an apocalyptic number.

It is an amenable number.

211051667803793 is a deficient number, since it is larger than the sum of its proper divisors (1).

211051667803793 is an equidigital number, since it uses as much as digits as its factorization.

211051667803793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 211051667803793 in words is "two hundred eleven trillion, fifty-one billion, six hundred sixty-seven million, eight hundred three thousand, seven hundred ninety-three".