263056323220 has 24 divisors (see below), whose sum is σ = 554567777064. Its totient is φ = 104813101056.

The previous prime is 263056323181. The next prime is 263056323247. The reversal of 263056323220 is 22323650362.

It can be written as a sum of positive squares in 4 ways, for example, as 36864768004 + 226191555216 = 192002^2 + 475596^2 .

It is a super-2 number, since 2×263056323220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25583997 + ... + 25594276.

It is an arithmetic number, because the mean of its divisors is an integer number (23106990711).

Almost surely, 2^263056323220 is an apocalyptic number.

263056323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263056323220 is an abundant number, since it is smaller than the sum of its proper divisors (291511453844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263056323220 is a wasteful number, since it uses less digits than its factorization.

263056323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51178539 (or 51178537 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 263056323220 its reverse (22323650362), we get a palindrome (285379973582).

The spelling of 263056323220 in words is "two hundred sixty-three billion, fifty-six million, three hundred twenty-three thousand, two hundred twenty".