263135245566463 has 4 divisors (see below), whose sum is σ = 263136414663360. Its totient is φ = 263134076469568.

The previous prime is 263135245566461. The next prime is 263135245566619. The reversal of 263135245566463 is 364665542531362.

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

It is a cyclic number.

It is not a de Polignac number, because 263135245566463 - 2¹ = 263135245566461 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 (263135245566461) 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, 584210770 + ... + 584661007.

It is an arithmetic number, because the mean of its divisors is an integer number (65784103665840).

Almost surely, 2^{263135245566463} is an apocalyptic number.

263135245566463 is a deficient number, since it is larger than the sum of its proper divisors (1169096897).

263135245566463 is a wasteful number, since it uses less digits than its factorization.

263135245566463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169096896.

The product of its digits is 279936000, while the sum is 61.

The spelling of 263135245566463 in words is "two hundred sixty-three trillion, one hundred thirty-five billion, two hundred forty-five million, five hundred sixty-six thousand, four hundred sixty-three".