17420451823 has 2 divisors, whose sum is σ = 17420451824. Its totient is φ = 17420451822.

The previous prime is 17420451809. The next prime is 17420451889. The reversal of 17420451823 is 32815402471.

It is a weak prime.

It is an emirp because it is prime and its reverse (32815402471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17420451823 - 2⁹ = 17420451311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17420451523) 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, 8710225911 + 8710225912.

It is an arithmetic number, because the mean of its divisors is an integer number (8710225912).

Almost surely, 2^17420451823 is an apocalyptic number.

17420451823 is a deficient number, since it is larger than the sum of its proper divisors (1).

17420451823 is an equidigital number, since it uses as much as digits as its factorization.

17420451823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 17420451823 in words is "seventeen billion, four hundred twenty million, four hundred fifty-one thousand, eight hundred twenty-three".