2643323320 has 128 divisors (see below), whose sum is σ = 7065792000. Its totient is φ = 879137280.

The previous prime is 2643323311. The next prime is 2643323351. The reversal of 2643323320 is 233233462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236989 + ... + 247891.

It is an arithmetic number, because the mean of its divisors is an integer number (55201500).

Almost surely, 2^2643323320 is an apocalyptic number.

2643323320 is a gapful number since it is divisible by the number (20) 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 2643323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532896000).

2643323320 is an abundant number, since it is smaller than the sum of its proper divisors (4422468680).

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

2643323320 is a wasteful number, since it uses less digits than its factorization.

2643323320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10973 (or 10969 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

The square root of 2643323320 is about 51413.2601572785. The cubic root of 2643323320 is about 1382.6643408978.

Adding to 2643323320 its reverse (233233462), we get a palindrome (2876556782).

The spelling of 2643323320 in words is "two billion, six hundred forty-three million, three hundred twenty-three thousand, three hundred twenty".