44355805750721 has 2 divisors, whose sum is σ = 44355805750722. Its totient is φ = 44355805750720.

The previous prime is 44355805750687. The next prime is 44355805750777. The reversal of 44355805750721 is 12705750855344.

It is an a-pointer prime, because the next prime (44355805750777) can be obtained adding 44355805750721 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30416328010000 + 13939477740721 = 5515100^2 + 3733561^2 .

It is a cyclic number.

It is not a de Polignac number, because 44355805750721 - 2⁶ = 44355805750657 is a prime.

It is not a weakly prime, because it can be changed into another prime (44355805758721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22177902875360 + 22177902875361.

It is an arithmetic number, because the mean of its divisors is an integer number (22177902875361).

Almost surely, 2^{44355805750721} is an apocalyptic number.

It is an amenable number.

44355805750721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44355805750721 is an equidigital number, since it uses as much as digits as its factorization.

44355805750721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520000, while the sum is 56.

The spelling of 44355805750721 in words is "forty-four trillion, three hundred fifty-five billion, eight hundred five million, seven hundred fifty thousand, seven hundred twenty-one".