44444455555501 has 2 divisors, whose sum is σ = 44444455555502. Its totient is φ = 44444455555500.

The previous prime is 44444455555457. The next prime is 44444455555541. The reversal of 44444455555501 is 10555555444444.

44444455555501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40513352300100 + 3931103255401 = 6365010^2 + 1982701^2 .

It is a cyclic number.

It is not a de Polignac number, because 44444455555501 - 2¹⁷ = 44444455424429 is a prime.

It is a super-2 number, since 2×44444455555501² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44444455555541) 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, 22222227777750 + 22222227777751.

It is an arithmetic number, because the mean of its divisors is an integer number (22222227777751).

Almost surely, 2^{44444455555501} is an apocalyptic number.

It is an amenable number.

44444455555501 is a deficient number, since it is larger than the sum of its proper divisors (1).

44444455555501 is an equidigital number, since it uses as much as digits as its factorization.

44444455555501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64000000, while the sum is 55.

The spelling of 44444455555501 in words is "forty-four trillion, four hundred forty-four billion, four hundred fifty-five million, five hundred fifty-five thousand, five hundred one".