17715478423 has 2 divisors, whose sum is σ = 17715478424. Its totient is φ = 17715478422.

The previous prime is 17715478421. The next prime is 17715478427. The reversal of 17715478423 is 32487451771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17715478423 - 2¹ = 17715478421 is a prime.

Together with 17715478421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17715478421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8857739211 + 8857739212.

It is an arithmetic number, because the mean of its divisors is an integer number (8857739212).

Almost surely, 2^17715478423 is an apocalyptic number.

17715478423 is a deficient number, since it is larger than the sum of its proper divisors (1).

17715478423 is an equidigital number, since it uses as much as digits as its factorization.

17715478423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 49.

The spelling of 17715478423 in words is "seventeen billion, seven hundred fifteen million, four hundred seventy-eight thousand, four hundred twenty-three".