38811227767421 has 2 divisors, whose sum is σ = 38811227767422. Its totient is φ = 38811227767420.

The previous prime is 38811227767409. The next prime is 38811227767427. The reversal of 38811227767421 is 12476772211883.

38811227767421 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., 28406661444100 + 10404566323321 = 5329790^2 + 3225611^2 .

It is a cyclic number.

It is not a de Polignac number, because 38811227767421 - 2¹⁰ = 38811227766397 is a prime.

It is a super-2 number, since 2×38811227767421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38811227767427) 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, 19405613883710 + 19405613883711.

It is an arithmetic number, because the mean of its divisors is an integer number (19405613883711).

Almost surely, 2^{38811227767421} is an apocalyptic number.

It is an amenable number.

38811227767421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38811227767421 is an equidigital number, since it uses as much as digits as its factorization.

38811227767421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12644352, while the sum is 59.

The spelling of 38811227767421 in words is "thirty-eight trillion, eight hundred eleven billion, two hundred twenty-seven million, seven hundred sixty-seven thousand, four hundred twenty-one".