211161006550757 has 2 divisors, whose sum is σ = 211161006550758. Its totient is φ = 211161006550756.

The previous prime is 211161006550657. The next prime is 211161006550843. The reversal of 211161006550757 is 757055600161112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169077644916196 + 42083361634561 = 13002986^2 + 6487169^2 .

It is a cyclic number.

It is not a de Polignac number, because 211161006550757 - 2¹⁰ = 211161006549733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211161006550457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105580503275378 + 105580503275379.

It is an arithmetic number, because the mean of its divisors is an integer number (105580503275379).

Almost surely, 2^{211161006550757} is an apocalyptic number.

It is an amenable number.

211161006550757 is a deficient number, since it is larger than the sum of its proper divisors (1).

211161006550757 is an equidigital number, since it uses as much as digits as its factorization.

211161006550757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441000, while the sum is 47.

The spelling of 211161006550757 in words is "two hundred eleven trillion, one hundred sixty-one billion, six million, five hundred fifty thousand, seven hundred fifty-seven".