2643321696 has 96 divisors (see below), whose sum is σ = 7192735200. Its totient is φ = 848977920.

The previous prime is 2643321679. The next prime is 2643321697. The reversal of 2643321696 is 6961233462.

2643321696 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643321697) 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, 2619240 + ... + 2620248.

It is an arithmetic number, because the mean of its divisors is an integer number (74924325).

Almost surely, 2^2643321696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2643321696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3596367600).

2643321696 is an abundant number, since it is smaller than the sum of its proper divisors (4549413504).

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

2643321696 is a wasteful number, since it uses less digits than its factorization.

2643321696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992 (or 1984 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 2643321696 is about 51413.2443636851. The cubic root of 2643321696 is about 1382.6640577382.

The spelling of 2643321696 in words is "two billion, six hundred forty-three million, three hundred twenty-one thousand, six hundred ninety-six".