126378291911 has 4 divisors (see below), whose sum is σ = 126393729024. Its totient is φ = 126362854800.

The previous prime is 126378291901. The next prime is 126378291937. The reversal of 126378291911 is 119192873621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119192873621 = 104677 ⋅1138673.

It is a cyclic number.

It is not a de Polignac number, because 126378291911 - 2⁶ = 126378291847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126378291911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126378291901) 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 in 3 ways as a sum of consecutive naturals, for example, 7706270 + ... + 7722651.

It is an arithmetic number, because the mean of its divisors is an integer number (31598432256).

Almost surely, 2^126378291911 is an apocalyptic number.

126378291911 is a deficient number, since it is larger than the sum of its proper divisors (15437113).

126378291911 is an equidigital number, since it uses as much as digits as its factorization.

126378291911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15437112.

The product of its digits is 326592, while the sum is 50.

The spelling of 126378291911 in words is "one hundred twenty-six billion, three hundred seventy-eight million, two hundred ninety-one thousand, nine hundred eleven".