421971818596 has 12 divisors (see below), whose sum is σ = 777316508080. Its totient is φ = 199881387720.

The previous prime is 421971818591. The next prime is 421971818627. The reversal of 421971818596 is 695818179124.

It is a super-2 number, since 2×421971818596² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421971818591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776130310 + ... + 2776130461.

Almost surely, 2^421971818596 is an apocalyptic number.

It is an amenable number.

421971818596 is a deficient number, since it is larger than the sum of its proper divisors (355344689484).

421971818596 is a wasteful number, since it uses less digits than its factorization.

421971818596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552260794 (or 5552260792 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 61.

The spelling of 421971818596 in words is "four hundred twenty-one billion, nine hundred seventy-one million, eight hundred eighteen thousand, five hundred ninety-six".