38404446027557 has 2 divisors, whose sum is σ = 38404446027558. Its totient is φ = 38404446027556.

The previous prime is 38404446027533. The next prime is 38404446027587. The reversal of 38404446027557 is 75572064440483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32257844800801 + 6146601226756 = 5679599^2 + 2479234^2 .

It is a cyclic number.

It is not a de Polignac number, because 38404446027557 - 2¹⁰ = 38404446026533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38404446027496 and 38404446027505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38404446027587) 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, 19202223013778 + 19202223013779.

It is an arithmetic number, because the mean of its divisors is an integer number (19202223013779).

Almost surely, 2^{38404446027557} is an apocalyptic number.

It is an amenable number.

38404446027557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38404446027557 is an equidigital number, since it uses as much as digits as its factorization.

38404446027557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90316800, while the sum is 59.

The spelling of 38404446027557 in words is "thirty-eight trillion, four hundred four billion, four hundred forty-six million, twenty-seven thousand, five hundred fifty-seven".