2555143244550 has 72 divisors (see below), whose sum is σ = 7392881137824. Its totient is φ = 628958335680.

The previous prime is 2555143244539. The next prime is 2555143244557. The reversal of 2555143244550 is 554423415552.

2555143244550 is a `hidden beast` number, since 2 + 5 + 5 + 51 + 4 + 3 + 2 + 44 + 550 = 666.

2555143244550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2555143244550² (a number of 26 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2555143244496 and 2555143244505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555143244557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 218382462 + ... + 218394161.

It is an arithmetic number, because the mean of its divisors is an integer number (102678904692).

Almost surely, 2^{2555143244550} is an apocalyptic number.

2555143244550 is an abundant number, since it is smaller than the sum of its proper divisors (4837737893274).

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

2555143244550 is a wasteful number, since it uses less digits than its factorization.

2555143244550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436776654 (or 436776646 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

The spelling of 2555143244550 in words is "two trillion, five hundred fifty-five billion, one hundred forty-three million, two hundred forty-four thousand, five hundred fifty".