2655661540040 has 16 divisors (see below), whose sum is σ = 5975238465180. Its totient is φ = 1062264616000.

The previous prime is 2655661540039. The next prime is 2655661540043. The reversal of 2655661540040 is 400451665562.

It can be written as a sum of positive squares in 2 ways, for example, as 2623032898084 + 32628641956 = 1619578^2 + 180634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2655661539973 and 2655661540000.

It is not an unprimeable number, because it can be changed into a prime (2655661540043) 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 3 ways as a sum of consecutive naturals, for example, 33195769211 + ... + 33195769290.

Almost surely, 2^{2655661540040} is an apocalyptic number.

2655661540040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655661540040 is an abundant number, since it is smaller than the sum of its proper divisors (3319576925140).

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

2655661540040 is a wasteful number, since it uses less digits than its factorization.

2655661540040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66391538512 (or 66391538508 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 2655661540040 in words is "two trillion, six hundred fifty-five billion, six hundred sixty-one million, five hundred forty thousand, forty".