38358665206861 has 2 divisors, whose sum is σ = 38358665206862. Its totient is φ = 38358665206860.

The previous prime is 38358665206811. The next prime is 38358665206909. The reversal of 38358665206861 is 16860256685383.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37491496380900 + 867168825961 = 6123030^2 + 931219^2 .

It is an emirp because it is prime and its reverse (16860256685383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38358665206861 - 2⁷ = 38358665206733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38358665206811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19179332603430 + 19179332603431.

It is an arithmetic number, because the mean of its divisors is an integer number (19179332603431).

Almost surely, 2^{38358665206861} is an apocalyptic number.

It is an amenable number.

38358665206861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38358665206861 is an equidigital number, since it uses as much as digits as its factorization.

38358665206861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 298598400, while the sum is 67.

The spelling of 38358665206861 in words is "thirty-eight trillion, three hundred fifty-eight billion, six hundred sixty-five million, two hundred six thousand, eight hundred sixty-one".