263520204055 has 4 divisors (see below), whose sum is σ = 316224244872. Its totient is φ = 210816163240.

The previous prime is 263520204047. The next prime is 263520204089. The reversal of 263520204055 is 550402025362.

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

It is not a de Polignac number, because 263520204055 - 2³ = 263520204047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 263520204055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26352020401 + ... + 26352020410.

It is an arithmetic number, because the mean of its divisors is an integer number (79056061218).

Almost surely, 2^263520204055 is an apocalyptic number.

263520204055 is a deficient number, since it is larger than the sum of its proper divisors (52704040817).

263520204055 is an equidigital number, since it uses as much as digits as its factorization.

263520204055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52704040816.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 263520204055 in words is "two hundred sixty-three billion, five hundred twenty million, two hundred four thousand, fifty-five".