38817630643417 has 2 divisors, whose sum is σ = 38817630643418. Its totient is φ = 38817630643416.

The previous prime is 38817630643409. The next prime is 38817630643439. The reversal of 38817630643417 is 71434603671883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27975520277721 + 10842110365696 = 5289189^2 + 3292736^2 .

It is a cyclic number.

It is not a de Polignac number, because 38817630643417 - 2³ = 38817630643409 is a prime.

It is not a weakly prime, because it can be changed into another prime (38817630643457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19408815321708 + 19408815321709.

It is an arithmetic number, because the mean of its divisors is an integer number (19408815321709).

Almost surely, 2^{38817630643417} is an apocalyptic number.

It is an amenable number.

38817630643417 is a deficient number, since it is larger than the sum of its proper divisors (1).

38817630643417 is an equidigital number, since it uses as much as digits as its factorization.

38817630643417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 38817630643417 in words is "thirty-eight trillion, eight hundred seventeen billion, six hundred thirty million, six hundred forty-three thousand, four hundred seventeen".