2555442004240 has 80 divisors (see below), whose sum is σ = 6133878406656. Its totient is φ = 989071488000.

The previous prime is 2555442004207. The next prime is 2555442004309. The reversal of 2555442004240 is 424002445552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2555442004240.

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 15 ways as a sum of consecutive naturals, for example, 19683540 + ... + 19812940.

Almost surely, 2^{2555442004240} is an apocalyptic number.

2555442004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555442004240 is an abundant number, since it is smaller than the sum of its proper divisors (3578436402416).

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

2555442004240 is a wasteful number, since it uses less digits than its factorization.

2555442004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137408 (or 137402 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

Adding to 2555442004240 its reverse (424002445552), we get a palindrome (2979444449792).

The spelling of 2555442004240 in words is "two trillion, five hundred fifty-five billion, four hundred forty-two million, four thousand, two hundred forty".