505406352263 has 4 divisors (see below), whose sum is σ = 505407777120. Its totient is φ = 505404927408.

The previous prime is 505406352203. The next prime is 505406352287. The reversal of 505406352263 is 362253604505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505406352263 - 2³⁸ = 230528445319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505406352263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505406352203) 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, 286706 + ... + 1045472.

It is an arithmetic number, because the mean of its divisors is an integer number (126351944280).

Almost surely, 2^505406352263 is an apocalyptic number.

505406352263 is a deficient number, since it is larger than the sum of its proper divisors (1424857).

505406352263 is an equidigital number, since it uses as much as digits as its factorization.

505406352263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424856.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 505406352263 its reverse (362253604505), we get a palindrome (867659956768).

The spelling of 505406352263 in words is "five hundred five billion, four hundred six million, three hundred fifty-two thousand, two hundred sixty-three".