17123958399047 has 4 divisors (see below), whose sum is σ = 17447051953800. Its totient is φ = 16800864844296.

The previous prime is 17123958399019. The next prime is 17123958399059. The reversal of 17123958399047 is 74099385932171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17123958399047 - 2¹⁸ = 17123958136903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17123958398047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161546777297 + ... + 161546777402.

It is an arithmetic number, because the mean of its divisors is an integer number (4361762988450).

Almost surely, 2^{17123958399047} is an apocalyptic number.

17123958399047 is a deficient number, since it is larger than the sum of its proper divisors (323093554753).

17123958399047 is an equidigital number, since it uses as much as digits as its factorization.

17123958399047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323093554752.

The product of its (nonzero) digits is 102876480, while the sum is 68.

The spelling of 17123958399047 in words is "seventeen trillion, one hundred twenty-three billion, nine hundred fifty-eight million, three hundred ninety-nine thousand, forty-seven".