55440305144993 has 2 divisors, whose sum is σ = 55440305144994. Its totient is φ = 55440305144992.

The previous prime is 55440305144891. The next prime is 55440305145019. The reversal of 55440305144993 is 39944150304455.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54881530954849 + 558774190144 = 7408207^2 + 747512^2 .

It is a cyclic number.

It is not a de Polignac number, because 55440305144993 - 2¹⁸ = 55440304882849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55440305144093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27720152572496 + 27720152572497.

It is an arithmetic number, because the mean of its divisors is an integer number (27720152572497).

Almost surely, 2^{55440305144993} is an apocalyptic number.

It is an amenable number.

55440305144993 is a deficient number, since it is larger than the sum of its proper divisors (1).

55440305144993 is an equidigital number, since it uses as much as digits as its factorization.

55440305144993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 55440305144993 in words is "fifty-five trillion, four hundred forty billion, three hundred five million, one hundred forty-four thousand, nine hundred ninety-three".