263054868541 has 4 divisors (see below), whose sum is σ = 263056182012. Its totient is φ = 263053555072.

The previous prime is 263054868499. The next prime is 263054868599. The reversal of 263054868541 is 145868450362.

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

It can be written as a sum of positive squares in 2 ways, for example, as 125584475641 + 137470392900 = 354379^2 + 370770^2 .

It is a cyclic number.

It is not a de Polignac number, because 263054868541 - 2⁹ = 263054868029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263054868641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286900 + ... + 780013.

It is an arithmetic number, because the mean of its divisors is an integer number (65764045503).

Almost surely, 2^263054868541 is an apocalyptic number.

It is an amenable number.

263054868541 is a deficient number, since it is larger than the sum of its proper divisors (1313471).

263054868541 is a wasteful number, since it uses less digits than its factorization.

263054868541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313470.

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 263054868541 in words is "two hundred sixty-three billion, fifty-four million, eight hundred sixty-eight thousand, five hundred forty-one".