255103838365 has 4 divisors (see below), whose sum is σ = 306124606044. Its totient is φ = 204083070688.

The previous prime is 255103838351. The next prime is 255103838401. The reversal of 255103838365 is 563838301552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180342060889 + 74761777476 = 424667^2 + 273426^2 .

It is a cyclic number.

It is not a de Polignac number, because 255103838365 - 2¹³ = 255103830173 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25510383832 + ... + 25510383841.

It is an arithmetic number, because the mean of its divisors is an integer number (76531151511).

Almost surely, 2^255103838365 is an apocalyptic number.

It is an amenable number.

255103838365 is a deficient number, since it is larger than the sum of its proper divisors (51020767679).

255103838365 is an equidigital number, since it uses as much as digits as its factorization.

255103838365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51020767678.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 255103838365 in words is "two hundred fifty-five billion, one hundred three million, eight hundred thirty-eight thousand, three hundred sixty-five".