2640251760 has 40 divisors (see below), whose sum is σ = 8184781200. Its totient is φ = 704067072.

The previous prime is 2640251753. The next prime is 2640251777. The reversal of 2640251760 is 671520462.

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

It is a congruent number.

It is an unprimeable number.

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, 5500285 + ... + 5500764.

It is an arithmetic number, because the mean of its divisors is an integer number (204619530).

Almost surely, 2^2640251760 is an apocalyptic number.

2640251760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640251760 is an abundant number, since it is smaller than the sum of its proper divisors (5544529440).

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

2640251760 is a wasteful number, since it uses less digits than its factorization.

2640251760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001065 (or 11001059 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2640251760 is about 51383.3801924319. The cubic root of 2640251760 is about 1382.1285781450.

The spelling of 2640251760 in words is "two billion, six hundred forty million, two hundred fifty-one thousand, seven hundred sixty".