126440067055 has 4 divisors (see below), whose sum is σ = 151728080472. Its totient is φ = 101152053640.

The previous prime is 126440067053. The next prime is 126440067059. The reversal of 126440067055 is 550760044621.

It is a happy number.

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

It is not a de Polignac number, because 126440067055 - 2¹ = 126440067053 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126440066999 and 126440067017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126440067053) 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, 12644006701 + ... + 12644006710.

It is an arithmetic number, because the mean of its divisors is an integer number (37932020118).

Almost surely, 2^126440067055 is an apocalyptic number.

126440067055 is a deficient number, since it is larger than the sum of its proper divisors (25288013417).

126440067055 is an equidigital number, since it uses as much as digits as its factorization.

126440067055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25288013416.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 126440067055 in words is "one hundred twenty-six billion, four hundred forty million, sixty-seven thousand, fifty-five".