421822481478 has 32 divisors (see below), whose sum is σ = 855171686400. Its totient is φ = 138689905536.

The previous prime is 421822481477. The next prime is 421822481527. The reversal of 421822481478 is 874184228124.

It is a self number, because there is not a number n which added to its sum of digits gives 421822481478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421822481477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37275 + ... + 919257.

It is an arithmetic number, because the mean of its divisors is an integer number (26724115200).

Almost surely, 2^421822481478 is an apocalyptic number.

421822481478 is an abundant number, since it is smaller than the sum of its proper divisors (433349204922).

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

421822481478 is a wasteful number, since it uses less digits than its factorization.

421822481478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883076.

The product of its digits is 1835008, while the sum is 51.

The spelling of 421822481478 in words is "four hundred twenty-one billion, eight hundred twenty-two million, four hundred eighty-one thousand, four hundred seventy-eight".