321436216444 has 48 divisors (see below), whose sum is σ = 682165471680. Its totient is φ = 129373608960.

The previous prime is 321436216403. The next prime is 321436216447. The reversal of 321436216444 is 444612634123.

It is a junction number, because it is equal to n+sod(n) for n = 321436216397 and 321436216406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321436216447) 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, 512979 + ... + 951850.

It is an arithmetic number, because the mean of its divisors is an integer number (14211780660).

Almost surely, 2^321436216444 is an apocalyptic number.

321436216444 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

321436216444 is an abundant number, since it is smaller than the sum of its proper divisors (360729255236).

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

321436216444 is a wasteful number, since it uses less digits than its factorization.

321436216444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465318 (or 1465316 counting only the distinct ones).

The product of its digits is 331776, while the sum is 40.

The spelling of 321436216444 in words is "three hundred twenty-one billion, four hundred thirty-six million, two hundred sixteen thousand, four hundred forty-four".