211757341049 has 2 divisors, whose sum is σ = 211757341050. Its totient is φ = 211757341048.

The previous prime is 211757341021. The next prime is 211757341057. The reversal of 211757341049 is 940143757112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209475559225 + 2281781824 = 457685^2 + 47768^2 .

It is a cyclic number.

It is not a de Polignac number, because 211757341049 - 2³⁶ = 143037864313 is a prime.

It is not a weakly prime, because it can be changed into another prime (211757341079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105878670524 + 105878670525.

It is an arithmetic number, because the mean of its divisors is an integer number (105878670525).

Almost surely, 2^211757341049 is an apocalyptic number.

It is an amenable number.

211757341049 is a deficient number, since it is larger than the sum of its proper divisors (1).

211757341049 is an equidigital number, since it uses as much as digits as its factorization.

211757341049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 211757341049 in words is "two hundred eleven billion, seven hundred fifty-seven million, three hundred forty-one thousand, forty-nine".