421323320214544 has 120 divisors (see below), whose sum is σ = 903864969217280. Its totient is φ = 190105973671680.

The previous prime is 421323320214521. The next prime is 421323320214547. The reversal of 421323320214544 is 445412023323124.

It is a junction number, because it is equal to n+sod(n) for n = 421323320214497 and 421323320214506.

It is not an unprimeable number, because it can be changed into a prime (421323320214547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260800609 + ... + 262411135.

Almost surely, 2^{421323320214544} is an apocalyptic number.

421323320214544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421323320214544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451932484608640).

421323320214544 is an abundant number, since it is smaller than the sum of its proper divisors (482541649002736).

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

421323320214544 is a wasteful number, since it uses less digits than its factorization.

421323320214544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611549 (or 1611532 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 421323320214544 its reverse (445412023323124), we get a palindrome (866735343537668).

The spelling of 421323320214544 in words is "four hundred twenty-one trillion, three hundred twenty-three billion, three hundred twenty million, two hundred fourteen thousand, five hundred forty-four".