421407071764 has 48 divisors (see below), whose sum is σ = 844635232000. Its totient is φ = 180213175296.

The previous prime is 421407071753. The next prime is 421407071797. The reversal of 421407071764 is 467170704124.

It is a self number, because there is not a number n which added to its sum of digits gives 421407071764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31443937 + ... + 31457335.

Almost surely, 2^421407071764 is an apocalyptic number.

It is an amenable number.

421407071764 is an abundant number, since it is smaller than the sum of its proper divisors (423228160236).

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

421407071764 is a wasteful number, since it uses less digits than its factorization.

421407071764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15752 (or 15750 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 43.

Adding to 421407071764 its reverse (467170704124), we get a palindrome (888577775888).

The spelling of 421407071764 in words is "four hundred twenty-one billion, four hundred seven million, seventy-one thousand, seven hundred sixty-four".