38987797663901 has 2 divisors, whose sum is σ = 38987797663902. Its totient is φ = 38987797663900.

The previous prime is 38987797663897. The next prime is 38987797663933. The reversal of 38987797663901 is 10936679778983.

38987797663901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38755231636900 + 232566027001 = 6225370^2 + 482251^2 .

It is a cyclic number.

It is not a de Polignac number, because 38987797663901 - 2² = 38987797663897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38987797663901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38987797663961) 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, 19493898831950 + 19493898831951.

It is an arithmetic number, because the mean of its divisors is an integer number (19493898831951).

Almost surely, 2^{38987797663901} is an apocalyptic number.

It is an amenable number.

38987797663901 is a deficient number, since it is larger than the sum of its proper divisors (1).

38987797663901 is an equidigital number, since it uses as much as digits as its factorization.

38987797663901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184974592, while the sum is 83.

The spelling of 38987797663901 in words is "thirty-eight trillion, nine hundred eighty-seven billion, seven hundred ninety-seven million, six hundred sixty-three thousand, nine hundred one".