2643440080 has 40 divisors (see below), whose sum is σ = 6148490400. Its totient is φ = 1056947328.

The previous prime is 2643440077. The next prime is 2643440081. The reversal of 2643440080 is 800443462.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643440081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255651 + ... + 265789.

It is an arithmetic number, because the mean of its divisors is an integer number (153712260).

Almost surely, 2^2643440080 is an apocalyptic number.

2643440080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2643440080 is an abundant number, since it is smaller than the sum of its proper divisors (3505050320).

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

2643440080 is a wasteful number, since it uses less digits than its factorization.

2643440080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13411 (or 13405 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 2643440080 is about 51414.3956494677. The cubic root of 2643440080 is about 1382.6846987948.

The spelling of 2643440080 in words is "two billion, six hundred forty-three million, four hundred forty thousand, eighty".