2643081320 has 32 divisors (see below), whose sum is σ = 6487564320. Its totient is φ = 961120320.

The previous prime is 2643081281. The next prime is 2643081361. The reversal of 2643081320 is 231803462.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003062 + ... + 3003941.

It is an arithmetic number, because the mean of its divisors is an integer number (202736385).

Almost surely, 2^2643081320 is an apocalyptic number.

2643081320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2643081320 is an abundant number, since it is smaller than the sum of its proper divisors (3844483000).

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

2643081320 is a wasteful number, since it uses less digits than its factorization.

2643081320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007025 (or 6007021 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2643081320 is about 51410.9066249565. The cubic root of 2643081320 is about 1382.6221446494.

Adding to 2643081320 its reverse (231803462), we get a palindrome (2874884782).

The spelling of 2643081320 in words is "two billion, six hundred forty-three million, eighty-one thousand, three hundred twenty".