2640660082560 has 512 divisors, whose sum is σ = 9482447462400. Its totient is φ = 703087257600.

The previous prime is 2640660082537. The next prime is 2640660082591. The reversal of 2640660082560 is 652800660462.

2640660082560 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 6 + 6 + 0 + 0 + 82 + 560 = 666.

2640660082560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1353489585 + ... + 1353491535.

It is an arithmetic number, because the mean of its divisors is an integer number (18520405200).

Almost surely, 2^{2640660082560} is an apocalyptic number.

2640660082560 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 2640660082560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4741223731200).

2640660082560 is an abundant number, since it is smaller than the sum of its proper divisors (6841787379840).

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

2640660082560 is an frugal number, since it uses more digits than its factorization.

2640660082560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2928 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 2640660082560 in words is "two trillion, six hundred forty billion, six hundred sixty million, eighty-two thousand, five hundred sixty".