421887817470 has 32 divisors (see below), whose sum is σ = 1157178014208. Its totient is φ = 96431501088.

The previous prime is 421887817457. The next prime is 421887817489. The reversal of 421887817470 is 74718788124.

It is a self number, because there is not a number n which added to its sum of digits gives 421887817470.

It is a congruent number.

It is an unprimeable number.

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, 1004494594 + ... + 1004495013.

It is an arithmetic number, because the mean of its divisors is an integer number (36161812944).

Almost surely, 2^421887817470 is an apocalyptic number.

421887817470 is an abundant number, since it is smaller than the sum of its proper divisors (735290196738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421887817470 is a wasteful number, since it uses less digits than its factorization.

421887817470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008989624.

The product of its (nonzero) digits is 5619712, while the sum is 57.

The spelling of 421887817470 in words is "four hundred twenty-one billion, eight hundred eighty-seven million, eight hundred seventeen thousand, four hundred seventy".