17421163711849 has 4 divisors (see below), whose sum is σ = 17421269930064. Its totient is φ = 17421057493636.

The previous prime is 17421163711817. The next prime is 17421163711859. The reversal of 17421163711849 is 94811736112471.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 17421163711849 - 2⁵ = 17421163711817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17421163711849.

It is not an unprimeable number, because it can be changed into a prime (17421163711859) 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 in 3 ways as a sum of consecutive naturals, for example, 52862707 + ... + 53191240.

It is an arithmetic number, because the mean of its divisors is an integer number (4355317482516).

Almost surely, 2^{17421163711849} is an apocalyptic number.

It is an amenable number.

17421163711849 is a deficient number, since it is larger than the sum of its proper divisors (106218215).

17421163711849 is a wasteful number, since it uses less digits than its factorization.

17421163711849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106218214.

The product of its digits is 2032128, while the sum is 55.

The spelling of 17421163711849 in words is "seventeen trillion, four hundred twenty-one billion, one hundred sixty-three million, seven hundred eleven thousand, eight hundred forty-nine".