210100128906457 has 2 divisors, whose sum is σ = 210100128906458. Its totient is φ = 210100128906456.

The previous prime is 210100128906377. The next prime is 210100128906463. The reversal of 210100128906457 is 754609821001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209376819479881 + 723309426576 = 14469859^2 + 850476^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100128906457 - 2⁴³ = 201304035884249 is a prime.

It is not a weakly prime, because it can be changed into another prime (210100128906487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050064453228 + 105050064453229.

It is an arithmetic number, because the mean of its divisors is an integer number (105050064453229).

Almost surely, 2^{210100128906457} is an apocalyptic number.

It is an amenable number.

210100128906457 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100128906457 is an equidigital number, since it uses as much as digits as its factorization.

210100128906457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

Adding to 210100128906457 its reverse (754609821001012), we get a palindrome (964709949907469).

The spelling of 210100128906457 in words is "two hundred ten trillion, one hundred billion, one hundred twenty-eight million, nine hundred six thousand, four hundred fifty-seven".