38781264801421 has 2 divisors, whose sum is σ = 38781264801422. Its totient is φ = 38781264801420.

The previous prime is 38781264801329. The next prime is 38781264801449. The reversal of 38781264801421 is 12410846218783.

It is a happy number.

38781264801421 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., 36887572308196 + 1893692493225 = 6073514^2 + 1376115^2 .

It is an emirp because it is prime and its reverse (12410846218783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38781264801421 - 2²³ = 38781256412813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38781264805421) 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, 19390632400710 + 19390632400711.

It is an arithmetic number, because the mean of its divisors is an integer number (19390632400711).

Almost surely, 2^{38781264801421} is an apocalyptic number.

It is an amenable number.

38781264801421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781264801421 is an equidigital number, since it uses as much as digits as its factorization.

38781264801421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 38781264801421 in words is "thirty-eight trillion, seven hundred eighty-one billion, two hundred sixty-four million, eight hundred one thousand, four hundred twenty-one".