421317554384 has 20 divisors (see below), whose sum is σ = 864320571684. Its totient is φ = 198267084288.

The previous prime is 421317554311. The next prime is 421317554417. The reversal of 421317554384 is 483455713124.

It can be written as a sum of positive squares in 2 ways, for example, as 392427073600 + 28890480784 = 626440^2 + 169972^2 .

It is a super-2 number, since 2×421317554384² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774480527 + ... + 774481070.

Almost surely, 2^421317554384 is an apocalyptic number.

It is an amenable number.

421317554384 is an abundant number, since it is smaller than the sum of its proper divisors (443003017300).

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

421317554384 is a wasteful number, since it uses less digits than its factorization.

421317554384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548961622 (or 1548961616 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The spelling of 421317554384 in words is "four hundred twenty-one billion, three hundred seventeen million, five hundred fifty-four thousand, three hundred eighty-four".