255556655553 has 16 divisors (see below), whose sum is σ = 341325479936. Its totient is φ = 170079719760.

The previous prime is 255556655539. The next prime is 255556655611. The reversal of 255556655553 is 355556655552.

It is not a de Polignac number, because 255556655553 - 2⁵ = 255556655521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255556655493 and 255556655502.

It is not an unprimeable number, because it can be changed into a prime (255556655513) 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 15 ways as a sum of consecutive naturals, for example, 4179600 + ... + 4240302.

It is an arithmetic number, because the mean of its divisors is an integer number (21332842496).

Almost surely, 2^255556655553 is an apocalyptic number.

It is an amenable number.

255556655553 is a deficient number, since it is larger than the sum of its proper divisors (85768824383).

255556655553 is a wasteful number, since it uses less digits than its factorization.

255556655553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63084.

The product of its digits is 84375000, while the sum is 57.

Subtracting 255556655553 from its reverse (355556655552), we obtain a palindrome (99999999999).

The spelling of 255556655553 in words is "two hundred fifty-five billion, five hundred fifty-six million, six hundred fifty-five thousand, five hundred fifty-three".