638000496017 has 2 divisors, whose sum is σ = 638000496018. Its totient is φ = 638000496016.

The previous prime is 638000495989. The next prime is 638000496037. The reversal of 638000496017 is 710694000836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 631904165776 + 6096330241 = 794924^2 + 78079^2 .

It is a cyclic number.

It is not a de Polignac number, because 638000496017 - 2⁶ = 638000495953 is a prime.

It is not a weakly prime, because it can be changed into another prime (638000496037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319000248008 + 319000248009.

It is an arithmetic number, because the mean of its divisors is an integer number (319000248009).

Almost surely, 2^638000496017 is an apocalyptic number.

It is an amenable number.

638000496017 is a deficient number, since it is larger than the sum of its proper divisors (1).

638000496017 is an equidigital number, since it uses as much as digits as its factorization.

638000496017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 638000496017 in words is "six hundred thirty-eight billion, four hundred ninety-six thousand, seventeen".