17238993220447 has 2 divisors, whose sum is σ = 17238993220448. Its totient is φ = 17238993220446.

The previous prime is 17238993220391. The next prime is 17238993220507. The reversal of 17238993220447 is 74402239983271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17238993220447 - 2¹⁵ = 17238993187679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17238993220147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8619496610223 + 8619496610224.

It is an arithmetic number, because the mean of its divisors is an integer number (8619496610224).

Almost surely, 2^{17238993220447} is an apocalyptic number.

17238993220447 is a deficient number, since it is larger than the sum of its proper divisors (1).

17238993220447 is an equidigital number, since it uses as much as digits as its factorization.

17238993220447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 17238993220447 in words is "seventeen trillion, two hundred thirty-eight billion, nine hundred ninety-three million, two hundred twenty thousand, four hundred forty-seven".