55440305144891 has 2 divisors, whose sum is σ = 55440305144892. Its totient is φ = 55440305144890.

The previous prime is 55440305144821. The next prime is 55440305144993. The reversal of 55440305144891 is 19844150304455.

55440305144891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55440305144891 - 2⁴² = 51042258633787 is a prime.

It is not a weakly prime, because it can be changed into another prime (55440305144801) 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 as a sum of consecutive naturals, namely, 27720152572445 + 27720152572446.

It is an arithmetic number, because the mean of its divisors is an integer number (27720152572446).

Almost surely, 2^{55440305144891} is an apocalyptic number.

55440305144891 is a deficient number, since it is larger than the sum of its proper divisors (1).

55440305144891 is an equidigital number, since it uses as much as digits as its factorization.

55440305144891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 55440305144891 in words is "fifty-five trillion, four hundred forty billion, three hundred five million, one hundred forty-four thousand, eight hundred ninety-one".