255656656553 has 8 divisors (see below), whose sum is σ = 261231049728. Its totient is φ = 250110066544.

The previous prime is 255656656543. The next prime is 255656656571. The reversal of 255656656553 is 355656656552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255656656553 - 2¹² = 255656652457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255656656492 and 255656656501.

It is not an unprimeable number, because it can be changed into a prime (255656656513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6932201 + ... + 6968982.

It is an arithmetic number, because the mean of its divisors is an integer number (32653881216).

Almost surely, 2^255656656553 is an apocalyptic number.

It is an amenable number.

255656656553 is a deficient number, since it is larger than the sum of its proper divisors (5574393175).

255656656553 is a wasteful number, since it uses less digits than its factorization.

255656656553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13901583.

The product of its digits is 121500000, while the sum is 59.

Subtracting 255656656553 from its reverse (355656656552), we obtain a palindrome (99999999999).

The spelling of 255656656553 in words is "two hundred fifty-five billion, six hundred fifty-six million, six hundred fifty-six thousand, five hundred fifty-three".