5440425550661 has 2 divisors, whose sum is σ = 5440425550662. Its totient is φ = 5440425550660.

The previous prime is 5440425550621. The next prime is 5440425550667. The reversal of 5440425550661 is 1660555240445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4135589968225 + 1304835582436 = 2033615^2 + 1142294^2 .

It is a cyclic number.

It is not a de Polignac number, because 5440425550661 - 2²⁶ = 5440358441797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5440425550667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720212775330 + 2720212775331.

It is an arithmetic number, because the mean of its divisors is an integer number (2720212775331).

Almost surely, 2^{5440425550661} is an apocalyptic number.

It is an amenable number.

5440425550661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440425550661 is an equidigital number, since it uses as much as digits as its factorization.

5440425550661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880000, while the sum is 47.

The spelling of 5440425550661 in words is "five trillion, four hundred forty billion, four hundred twenty-five million, five hundred fifty thousand, six hundred sixty-one".