38549471717 has 2 divisors, whose sum is σ = 38549471718. Its totient is φ = 38549471716.

The previous prime is 38549471687. The next prime is 38549471729. The reversal of 38549471717 is 71717494583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38217904036 + 331567681 = 195494^2 + 18209^2 .

It is a cyclic number.

It is not a de Polignac number, because 38549471717 - 2¹⁴ = 38549455333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38549471417) 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, 19274735858 + 19274735859.

It is an arithmetic number, because the mean of its divisors is an integer number (19274735859).

Almost surely, 2^38549471717 is an apocalyptic number.

It is an amenable number.

38549471717 is a deficient number, since it is larger than the sum of its proper divisors (1).

38549471717 is an equidigital number, since it uses as much as digits as its factorization.

38549471717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 56.

The spelling of 38549471717 in words is "thirty-eight billion, five hundred forty-nine million, four hundred seventy-one thousand, seven hundred seventeen".