421968196836 has 36 divisors (see below), whose sum is σ = 1066912431312. Its totient is φ = 140620382064.

The previous prime is 421968196831. The next prime is 421968196939. The reversal of 421968196836 is 638691869124.

421968196836 is a `hidden beast` number, since 421 + 96 + 8 + 1 + 96 + 8 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (421968196831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1342750 + ... + 1626933.

Almost surely, 2^421968196836 is an apocalyptic number.

It is an amenable number.

421968196836 is an abundant number, since it is smaller than the sum of its proper divisors (644944234476).

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

421968196836 is a wasteful number, since it uses less digits than its factorization.

421968196836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973640 (or 2973635 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 421968196836 in words is "four hundred twenty-one billion, nine hundred sixty-eight million, one hundred ninety-six thousand, eight hundred thirty-six".