263220755255253 has 6 divisors (see below), whose sum is σ = 380207757590934. Its totient is φ = 175480503503496.

The previous prime is 263220755255239. The next prime is 263220755255273. The reversal of 263220755255253 is 352552557022362.

263220755255253 is a `hidden beast` number, since 2 + 6 + 3 + 2 + 20 + 75 + 5 + 25 + 525 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 240579736060689 + 22641019194564 = 15510633^2 + 4758258^2 .

It is not a de Polignac number, because 263220755255253 - 2²¹ = 263220753158101 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 263220755255253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263220755255273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14623375291950 + ... + 14623375291967.

It is an arithmetic number, because the mean of its divisors is an integer number (63367959598489).

Almost surely, 2^{263220755255253} is an apocalyptic number.

It is an amenable number.

263220755255253 is a deficient number, since it is larger than the sum of its proper divisors (116987002335681).

263220755255253 is a wasteful number, since it uses less digits than its factorization.

263220755255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29246750583923 (or 29246750583920 counting only the distinct ones).

The product of its (nonzero) digits is 37800000, while the sum is 54.

The spelling of 263220755255253 in words is "two hundred sixty-three trillion, two hundred twenty billion, seven hundred fifty-five million, two hundred fifty-five thousand, two hundred fifty-three".