38387734374217 has 2 divisors, whose sum is σ = 38387734374218. Its totient is φ = 38387734374216.

The previous prime is 38387734374163. The next prime is 38387734374259. The reversal of 38387734374217 is 71247343778383.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37476876010896 + 910858363321 = 6121836^2 + 954389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38387734374217 is a prime.

It is not a weakly prime, because it can be changed into another prime (38387734374277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19193867187108 + 19193867187109.

It is an arithmetic number, because the mean of its divisors is an integer number (19193867187109).

Almost surely, 2^{38387734374217} is an apocalyptic number.

It is an amenable number.

38387734374217 is a deficient number, since it is larger than the sum of its proper divisors (1).

38387734374217 is an equidigital number, since it uses as much as digits as its factorization.

38387734374217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 398297088, while the sum is 67.

The spelling of 38387734374217 in words is "thirty-eight trillion, three hundred eighty-seven billion, seven hundred thirty-four million, three hundred seventy-four thousand, two hundred seventeen".