263855044207872 has 576 divisors, whose sum is σ = 884658832512000. Its totient is φ = 76900428767232.

The previous prime is 263855044207871. The next prime is 263855044207889. The reversal of 263855044207872 is 278702440558362.

It is a happy number.

263855044207872 is a `hidden beast` number, since 2 + 6 + 3 + 8 + 5 + 50 + 442 + 0 + 78 + 72 = 666.

263855044207872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263855044207871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16422164383 + ... + 16422180449.

Almost surely, 2^{263855044207872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263855044207872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442329416256000).

263855044207872 is an abundant number, since it is smaller than the sum of its proper divisors (620803788304128).

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

263855044207872 is a wasteful number, since it uses less digits than its factorization.

263855044207872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25743 (or 25723 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 63.

The spelling of 263855044207872 in words is "two hundred sixty-three trillion, eight hundred fifty-five billion, forty-four million, two hundred seven thousand, eight hundred seventy-two".