420554118447 has 16 divisors (see below), whose sum is σ = 632342292480. Its totient is φ = 276184793016.

The previous prime is 420554118371. The next prime is 420554118461. The reversal of 420554118447 is 744811455024.

420554118447 is a `hidden beast` number, since 4 + 2 + 0 + 554 + 11 + 84 + 4 + 7 = 666.

It is not a de Polignac number, because 420554118447 - 2⁸ = 420554118191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420554118247) 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 15 ways as a sum of consecutive naturals, for example, 116237583 + ... + 116241200.

It is an arithmetic number, because the mean of its divisors is an integer number (39521393280).

Almost surely, 2^420554118447 is an apocalyptic number.

420554118447 is a deficient number, since it is larger than the sum of its proper divisors (211788174033).

420554118447 is a wasteful number, since it uses less digits than its factorization.

420554118447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232478859 (or 232478853 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 45.

The spelling of 420554118447 in words is "four hundred twenty billion, five hundred fifty-four million, one hundred eighteen thousand, four hundred forty-seven".