38211965382917 has 2 divisors, whose sum is σ = 38211965382918. Its totient is φ = 38211965382916.

The previous prime is 38211965382901. The next prime is 38211965382931. The reversal of 38211965382917 is 71928356911283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37732837002436 + 479128380481 = 6142706^2 + 692191^2 .

It is a cyclic number.

It is not a de Polignac number, because 38211965382917 - 2⁴ = 38211965382901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38211965382317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19105982691458 + 19105982691459.

It is an arithmetic number, because the mean of its divisors is an integer number (19105982691459).

Almost surely, 2^{38211965382917} is an apocalyptic number.

It is an amenable number.

38211965382917 is a deficient number, since it is larger than the sum of its proper divisors (1).

38211965382917 is an equidigital number, since it uses as much as digits as its factorization.

38211965382917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 65.

The spelling of 38211965382917 in words is "thirty-eight trillion, two hundred eleven billion, nine hundred sixty-five million, three hundred eighty-two thousand, nine hundred seventeen".