421546378286 has 24 divisors (see below), whose sum is σ = 695336166840. Its totient is φ = 191527292880.

The previous prime is 421546378237. The next prime is 421546378289. The reversal of 421546378286 is 682873645124.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421546378289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165245 + ... + 932951.

It is an arithmetic number, because the mean of its divisors is an integer number (28972340285).

Almost surely, 2^421546378286 is an apocalyptic number.

421546378286 is a deficient number, since it is larger than the sum of its proper divisors (273789788554).

421546378286 is a wasteful number, since it uses less digits than its factorization.

421546378286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770000 (or 769989 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 56.

The spelling of 421546378286 in words is "four hundred twenty-one billion, five hundred forty-six million, three hundred seventy-eight thousand, two hundred eighty-six".