38851490845481 has 2 divisors, whose sum is σ = 38851490845482. Its totient is φ = 38851490845480.

The previous prime is 38851490845379. The next prime is 38851490845507. The reversal of 38851490845481 is 18454809415883.

It is a happy number.

38851490845481 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., 38240371854400 + 611118991081 = 6183880^2 + 781741^2 .

It is a cyclic number.

It is not a de Polignac number, because 38851490845481 - 2¹⁸ = 38851490583337 is a prime.

It is a super-2 number, since 2×38851490845481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38851493845481) 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, 19425745422740 + 19425745422741.

It is an arithmetic number, because the mean of its divisors is an integer number (19425745422741).

Almost surely, 2^{38851490845481} is an apocalyptic number.

It is an amenable number.

38851490845481 is a deficient number, since it is larger than the sum of its proper divisors (1).

38851490845481 is an equidigital number, since it uses as much as digits as its factorization.

38851490845481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176947200, while the sum is 68.

The spelling of 38851490845481 in words is "thirty-eight trillion, eight hundred fifty-one billion, four hundred ninety million, eight hundred forty-five thousand, four hundred eighty-one".