2660243223040 has 240 divisors, whose sum is σ = 7020027481896. Its totient is φ = 966131712000.

The previous prime is 2660243223037. The next prime is 2660243223049. The reversal of 2660243223040 is 403223420662.

It can be written as a sum of positive squares in 12 ways, for example, as 1266219069696 + 1394024153344 = 1125264^2 + 1180688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2660243222987 and 2660243223005.

It is not an unprimeable number, because it can be changed into a prime (2660243223049) 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 23 ways as a sum of consecutive naturals, for example, 26340640 + ... + 26441440.

Almost surely, 2^{2660243223040} is an apocalyptic number.

2660243223040 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 2660243223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3510013740948).

2660243223040 is an abundant number, since it is smaller than the sum of its proper divisors (4359784258856).

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

2660243223040 is a wasteful number, since it uses less digits than its factorization.

2660243223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100911 (or 100882 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

The spelling of 2660243223040 in words is "two trillion, six hundred sixty billion, two hundred forty-three million, two hundred twenty-three thousand, forty".