421567874805 has 128 divisors (see below), whose sum is σ = 886560546816. Its totient is φ = 165851136000.

The previous prime is 421567874753. The next prime is 421567874809. The reversal of 421567874805 is 508478765124.

It is not a de Polignac number, because 421567874805 - 2¹⁰ = 421567873781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421567874809) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2495005 + ... + 2658605.

It is an arithmetic number, because the mean of its divisors is an integer number (6926254272).

Almost surely, 2^421567874805 is an apocalyptic number.

It is an amenable number.

421567874805 is an abundant number, since it is smaller than the sum of its proper divisors (464992672011).

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

421567874805 is a wasteful number, since it uses less digits than its factorization.

421567874805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163747.

The product of its (nonzero) digits is 15052800, while the sum is 57.

The spelling of 421567874805 in words is "four hundred twenty-one billion, five hundred sixty-seven million, eight hundred seventy-four thousand, eight hundred five".