211011968879 has 2 divisors, whose sum is σ = 211011968880. Its totient is φ = 211011968878.

The previous prime is 211011968837. The next prime is 211011968953. The reversal of 211011968879 is 978869110112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211011968879 - 2¹⁶ = 211011903343 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211011968879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211011962879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505984439 + 105505984440.

It is an arithmetic number, because the mean of its divisors is an integer number (105505984440).

Almost surely, 2^211011968879 is an apocalyptic number.

211011968879 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011968879 is an equidigital number, since it uses as much as digits as its factorization.

211011968879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 53.

The spelling of 211011968879 in words is "two hundred eleven billion, eleven million, nine hundred sixty-eight thousand, eight hundred seventy-nine".