418973701721 has 12 divisors (see below), whose sum is σ = 447149254320. Its totient is φ = 391485065760.

The previous prime is 418973701711. The next prime is 418973701747. The reversal of 418973701721 is 127107379814.

It is a de Polignac number, because none of the positive numbers 2^k-418973701721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 418973701721.

It is not an unprimeable number, because it can be changed into a prime (418973701711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1967735 + ... + 2170236.

It is an arithmetic number, because the mean of its divisors is an integer number (37262437860).

Almost surely, 2^418973701721 is an apocalyptic number.

It is an amenable number.

418973701721 is a deficient number, since it is larger than the sum of its proper divisors (28175552599).

418973701721 is an equidigital number, since it uses as much as digits as its factorization.

418973701721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138136 (or 4138063 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 418973701721 in words is "four hundred eighteen billion, nine hundred seventy-three million, seven hundred one thousand, seven hundred twenty-one".