421481414656 has 69 divisors (see below), whose sum is σ = 845630305849. Its totient is φ = 210075910144.

The previous prime is 421481414617. The next prime is 421481414671. The reversal of 421481414656 is 656414184124.

The square root of 421481414656 is 649216.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23592960000 + 397888454656 = 153600^2 + 630784^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1329594210 + ... + 1329594526.

Almost surely, 2^421481414656 is an apocalyptic number.

421481414656 is the 649216-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421481414656

421481414656 is an abundant number, since it is smaller than the sum of its proper divisors (424148891193).

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

421481414656 is an frugal number, since it uses more digits than its factorization.

421481414656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 319 counting only the distinct ones).

The product of its digits is 737280, while the sum is 46.

The spelling of 421481414656 in words is "four hundred twenty-one billion, four hundred eighty-one million, four hundred fourteen thousand, six hundred fifty-six".