263434105543 has 16 divisors (see below), whose sum is σ = 308474901504. Its totient is φ = 220276450080.

The previous prime is 263434105483. The next prime is 263434105547. The reversal of 263434105543 is 345501434362.

It is a cyclic number.

It is not a de Polignac number, because 263434105543 - 2⁹ = 263434105031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 263434105496 and 263434105505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263434105547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1203088 + ... + 1405093.

It is an arithmetic number, because the mean of its divisors is an integer number (19279681344).

Almost surely, 2^263434105543 is an apocalyptic number.

263434105543 is a deficient number, since it is larger than the sum of its proper divisors (45040795961).

263434105543 is a wasteful number, since it uses less digits than its factorization.

263434105543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608542.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 263434105543 in words is "two hundred sixty-three billion, four hundred thirty-four million, one hundred five thousand, five hundred forty-three".