9983931240817 has 2 divisors, whose sum is σ = 9983931240818. Its totient is φ = 9983931240816.

The previous prime is 9983931240761. The next prime is 9983931240863. The reversal of 9983931240817 is 7180421393899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9668840994576 + 315090246241 = 3109476^2 + 561329^2 .

It is a cyclic number.

It is not a de Polignac number, because 9983931240817 - 2¹⁵ = 9983931208049 is a prime.

It is not a weakly prime, because it can be changed into another prime (9983931240887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991965620408 + 4991965620409.

It is an arithmetic number, because the mean of its divisors is an integer number (4991965620409).

Almost surely, 2^{9983931240817} is an apocalyptic number.

It is an amenable number.

9983931240817 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983931240817 is an equidigital number, since it uses as much as digits as its factorization.

9983931240817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 9983931240817 in words is "nine trillion, nine hundred eighty-three billion, nine hundred thirty-one million, two hundred forty thousand, eight hundred seventeen".