255238066943 has 4 divisors (see below), whose sum is σ = 260668664160. Its totient is φ = 249807469728.

The previous prime is 255238066933. The next prime is 255238066969. The reversal of 255238066943 is 349660832552.

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 255238066943 - 2¹⁴ = 255238050559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255238066933) 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, 2715298538 + ... + 2715298631.

It is an arithmetic number, because the mean of its divisors is an integer number (65167166040).

Almost surely, 2^255238066943 is an apocalyptic number.

255238066943 is a deficient number, since it is larger than the sum of its proper divisors (5430597217).

255238066943 is an equidigital number, since it uses as much as digits as its factorization.

255238066943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430597216.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 255238066943 in words is "two hundred fifty-five billion, two hundred thirty-eight million, sixty-six thousand, nine hundred forty-three".