44378357857 has 2 divisors, whose sum is σ = 44378357858. Its totient is φ = 44378357856.

The previous prime is 44378357839. The next prime is 44378357869. The reversal of 44378357857 is 75875387344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40510015441 + 3868342416 = 201271^2 + 62196^2 .

It is a cyclic number.

It is not a de Polignac number, because 44378357857 - 2¹¹ = 44378355809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44378357795 and 44378357804.

It is not a weakly prime, because it can be changed into another prime (44378327857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22189178928 + 22189178929.

It is an arithmetic number, because the mean of its divisors is an integer number (22189178929).

Almost surely, 2^44378357857 is an apocalyptic number.

It is an amenable number.

44378357857 is a deficient number, since it is larger than the sum of its proper divisors (1).

44378357857 is an equidigital number, since it uses as much as digits as its factorization.

44378357857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79027200, while the sum is 61.

The spelling of 44378357857 in words is "forty-four billion, three hundred seventy-eight million, three hundred fifty-seven thousand, eight hundred fifty-seven".