32320320444 has 72 divisors (see below), whose sum is σ = 81985411872. Its totient is φ = 10735695360.

The previous prime is 32320320413. The next prime is 32320320479. The reversal of 32320320444 is 44402302323.

It is a super-2 number, since 2×32320320444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18436272 + ... + 18438024.

It is an arithmetic number, because the mean of its divisors is an integer number (1138686276).

Almost surely, 2^32320320444 is an apocalyptic number.

It is an amenable number.

32320320444 is an abundant number, since it is smaller than the sum of its proper divisors (49665091428).

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

32320320444 is a wasteful number, since it uses less digits than its factorization.

32320320444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3262 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 32320320444 its reverse (44402302323), we get a palindrome (76722622767).

The spelling of 32320320444 in words is "thirty-two billion, three hundred twenty million, three hundred twenty thousand, four hundred forty-four".