4385385840557 has 2 divisors, whose sum is σ = 4385385840558. Its totient is φ = 4385385840556.

The previous prime is 4385385840523. The next prime is 4385385840587. The reversal of 4385385840557 is 7550485835834.

It is a happy number.

4385385840557 is digitally balanced in base 3, 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., 3996276866761 + 389108973796 = 1999069^2 + 623786^2 .

It is a cyclic number.

It is not a de Polignac number, because 4385385840557 - 2¹⁶ = 4385385775021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4385385840493 and 4385385840502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4385385840587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2192692920278 + 2192692920279.

It is an arithmetic number, because the mean of its divisors is an integer number (2192692920279).

Almost surely, 2^{4385385840557} is an apocalyptic number.

It is an amenable number.

4385385840557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4385385840557 is an equidigital number, since it uses as much as digits as its factorization.

4385385840557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560000, while the sum is 65.

The spelling of 4385385840557 in words is "four trillion, three hundred eighty-five billion, three hundred eighty-five million, eight hundred forty thousand, five hundred fifty-seven".