255603242771 has 4 divisors (see below), whose sum is σ = 257992058232. Its totient is φ = 253214427312.

The previous prime is 255603242747. The next prime is 255603242809. The reversal of 255603242771 is 177242306552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255603242771 - 2¹⁸ = 255602980627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255603242711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194407570 + ... + 1194407783.

It is an arithmetic number, because the mean of its divisors is an integer number (64498014558).

Almost surely, 2^255603242771 is an apocalyptic number.

255603242771 is a deficient number, since it is larger than the sum of its proper divisors (2388815461).

255603242771 is a wasteful number, since it uses less digits than its factorization.

255603242771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388815460.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 255603242771 in words is "two hundred fifty-five billion, six hundred three million, two hundred forty-two thousand, seven hundred seventy-one".