421120186816 has 112 divisors (see below), whose sum is σ = 962347332096. Its totient is φ = 179104472064.

The previous prime is 421120186807. The next prime is 421120186819. The reversal of 421120186816 is 618681021124.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421120186819) 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, 32231101 + ... + 32244163.

Almost surely, 2^421120186816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421120186816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481173666048).

421120186816 is an abundant number, since it is smaller than the sum of its proper divisors (541227145280).

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

421120186816 is a wasteful number, since it uses less digits than its factorization.

421120186816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13626 (or 13616 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The spelling of 421120186816 in words is "four hundred twenty-one billion, one hundred twenty million, one hundred eighty-six thousand, eight hundred sixteen".