38638863787417 has 2 divisors, whose sum is σ = 38638863787418. Its totient is φ = 38638863787416.

The previous prime is 38638863787309. The next prime is 38638863787439. The reversal of 38638863787417 is 71478736883683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32063634450576 + 6575229336841 = 5662476^2 + 2564221^2 .

It is an emirp because it is prime and its reverse (71478736883683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38638863787417 - 2¹¹ = 38638863785369 is a prime.

It is not a weakly prime, because it can be changed into another prime (38638863787487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19319431893708 + 19319431893709.

It is an arithmetic number, because the mean of its divisors is an integer number (19319431893709).

Almost surely, 2^{38638863787417} is an apocalyptic number.

It is an amenable number.

38638863787417 is a deficient number, since it is larger than the sum of its proper divisors (1).

38638863787417 is an equidigital number, since it uses as much as digits as its factorization.

38638863787417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5462360064, while the sum is 79.

The spelling of 38638863787417 in words is "thirty-eight trillion, six hundred thirty-eight billion, eight hundred sixty-three million, seven hundred eighty-seven thousand, four hundred seventeen".