255844243193 has 48 divisors (see below), whose sum is σ = 332068918272. Its totient is φ = 192747772800.

The previous prime is 255844243189. The next prime is 255844243231. The reversal of 255844243193 is 391342448552.

It is not a de Polignac number, because 255844243193 - 2² = 255844243189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255844243133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32475971 + ... + 32483847.

It is an arithmetic number, because the mean of its divisors is an integer number (6918102464).

Almost surely, 2^255844243193 is an apocalyptic number.

It is an amenable number.

255844243193 is a deficient number, since it is larger than the sum of its proper divisors (76224675079).

255844243193 is a wasteful number, since it uses less digits than its factorization.

255844243193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174 (or 9163 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The spelling of 255844243193 in words is "two hundred fifty-five billion, eight hundred forty-four million, two hundred forty-three thousand, one hundred ninety-three".