38003390466721 has 3 divisors (see below), whose sum is σ = 38003396631411. Its totient is φ = 38003384302032.

The previous prime is 38003390466703. The next prime is 38003390466733. The reversal of 38003390466721 is 12766409330083.

The square root of 38003390466721 is 6164689.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 17910763516321 + 20092626950400 = 4232111^2 + 4482480^2 .

It is not a de Polignac number, because 38003390466721 - 2¹³ = 38003390458529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38003390466751) 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 in 2 ways as a sum of consecutive naturals, for example, 3082345 + ... + 9247033.

It is an arithmetic number, because the mean of its divisors is an integer number (12667798877137).

Almost surely, 2^{38003390466721} is an apocalyptic number.

38003390466721 is the 6164689-th square number.

38003390466721 is the 3082345-th centered octagonal number.

It is an amenable number.

38003390466721 is a deficient number, since it is larger than the sum of its proper divisors (6164690).

38003390466721 is an frugal number, since it uses more digits than its factorization.

38003390466721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329378 (or 6164689 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 38003390466721 in words is "thirty-eight trillion, three billion, three hundred ninety million, four hundred sixty-six thousand, seven hundred twenty-one".