126698204189 has 2 divisors, whose sum is σ = 126698204190. Its totient is φ = 126698204188.

The previous prime is 126698204161. The next prime is 126698204219. The reversal of 126698204189 is 981402896621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110855702500 + 15842501689 = 332950^2 + 125867^2 .

It is a cyclic number.

It is not a de Polignac number, because 126698204189 - 2¹² = 126698200093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126698204389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63349102094 + 63349102095.

It is an arithmetic number, because the mean of its divisors is an integer number (63349102095).

Almost surely, 2^126698204189 is an apocalyptic number.

It is an amenable number.

126698204189 is a deficient number, since it is larger than the sum of its proper divisors (1).

126698204189 is an equidigital number, since it uses as much as digits as its factorization.

126698204189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 126698204189 in words is "one hundred twenty-six billion, six hundred ninety-eight million, two hundred four thousand, one hundred eighty-nine".