38170115567981 has 2 divisors, whose sum is σ = 38170115567982. Its totient is φ = 38170115567980.

The previous prime is 38170115567977. The next prime is 38170115568023. The reversal of 38170115567981 is 18976551107183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36148412646025 + 2021702921956 = 6012355^2 + 1421866^2 .

It is an emirp because it is prime and its reverse (18976551107183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38170115567981 - 2² = 38170115567977 is a prime.

It is a super-3 number, since 3×38170115567981³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38170115567951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19085057783990 + 19085057783991.

It is an arithmetic number, because the mean of its divisors is an integer number (19085057783991).

Almost surely, 2^{38170115567981} is an apocalyptic number.

It is an amenable number.

38170115567981 is a deficient number, since it is larger than the sum of its proper divisors (1).

38170115567981 is an equidigital number, since it uses as much as digits as its factorization.

38170115567981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 62.

The spelling of 38170115567981 in words is "thirty-eight trillion, one hundred seventy billion, one hundred fifteen million, five hundred sixty-seven thousand, nine hundred eighty-one".