126627247189 has 2 divisors, whose sum is σ = 126627247190. Its totient is φ = 126627247188.

The previous prime is 126627247181. The next prime is 126627247267. The reversal of 126627247189 is 981742726621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111308976900 + 15318270289 = 333630^2 + 123767^2 .

It is a cyclic number.

It is not a de Polignac number, because 126627247189 - 2³ = 126627247181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126627247181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63313623594 + 63313623595.

It is an arithmetic number, because the mean of its divisors is an integer number (63313623595).

Almost surely, 2^126627247189 is an apocalyptic number.

It is an amenable number.

126627247189 is a deficient number, since it is larger than the sum of its proper divisors (1).

126627247189 is an equidigital number, since it uses as much as digits as its factorization.

126627247189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 55.

The spelling of 126627247189 in words is "one hundred twenty-six billion, six hundred twenty-seven million, two hundred forty-seven thousand, one hundred eighty-nine".