44444448888781 has 2 divisors, whose sum is σ = 44444448888782. Its totient is φ = 44444448888780.

The previous prime is 44444448888731. The next prime is 44444448888887. The reversal of 44444448888781 is 18788884444444.

44444448888781 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 can be written as a sum of positive squares in only one way, i.e., 43826597867556 + 617851021225 = 6620166^2 + 786035^2 .

It is a cyclic number.

It is not a de Polignac number, because 44444448888781 - 2¹⁵ = 44444448856013 is a prime.

It is a super-2 number, since 2×44444448888781² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44444448888698 and 44444448888707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44444448888731) 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, 22222224444390 + 22222224444391.

It is an arithmetic number, because the mean of its divisors is an integer number (22222224444391).

Almost surely, 2^{44444448888781} is an apocalyptic number.

It is an amenable number.

44444448888781 is a deficient number, since it is larger than the sum of its proper divisors (1).

44444448888781 is an equidigital number, since it uses as much as digits as its factorization.

44444448888781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3758096384, while the sum is 76.

The spelling of 44444448888781 in words is "forty-four trillion, four hundred forty-four billion, four hundred forty-eight million, eight hundred eighty-eight thousand, seven hundred eighty-one".