126249183009 has 44 divisors (see below), whose sum is σ = 190351525716. Its totient is φ = 83731167072.

The previous prime is 126249183007. The next prime is 126249183013. The reversal of 126249183009 is 900381942621.

126249183009 is a `hidden beast` number, since 1 + 2 + 624 + 9 + 18 + 3 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 102886977600 + 23362205409 = 320760^2 + 152847^2 .

It is not a de Polignac number, because 126249183009 - 2¹ = 126249183007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126249183001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 11627227 + ... + 11638079.

It is an arithmetic number, because the mean of its divisors is an integer number (4326171039).

Almost surely, 2^126249183009 is an apocalyptic number.

It is an amenable number.

126249183009 is a deficient number, since it is larger than the sum of its proper divisors (64102342707).

126249183009 is an frugal number, since it uses more digits than its factorization.

126249183009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080 (or 11053 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 126249183009 in words is "one hundred twenty-six billion, two hundred forty-nine million, one hundred eighty-three thousand, nine".