126400044110399 has 4 divisors (see below), whose sum is σ = 126400126327440. Its totient is φ = 126399961893360.

The previous prime is 126400044110369. The next prime is 126400044110419. The reversal of 126400044110399 is 993011440004621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126400044110399 - 2⁸ = 126400044110143 is a prime.

It is a super-2 number, since 2×126400044110399² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126400044110339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38757614 + ... + 41892155.

It is an arithmetic number, because the mean of its divisors is an integer number (31600031581860).

Almost surely, 2^{126400044110399} is an apocalyptic number.

126400044110399 is a deficient number, since it is larger than the sum of its proper divisors (82217041).

126400044110399 is an equidigital number, since it uses as much as digits as its factorization.

126400044110399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82217040.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 126400044110399 in words is "one hundred twenty-six trillion, four hundred billion, forty-four million, one hundred ten thousand, three hundred ninety-nine".