505213645011 has 16 divisors (see below), whose sum is σ = 683142647040. Its totient is φ = 332047382240.

The previous prime is 505213645009. The next prime is 505213645033. The reversal of 505213645011 is 110546312505.

It is a cyclic number.

It is not a de Polignac number, because 505213645011 - 2¹ = 505213645009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505213645411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4733116 + ... + 4838678.

It is an arithmetic number, because the mean of its divisors is an integer number (42696415440).

Almost surely, 2^505213645011 is an apocalyptic number.

505213645011 is a deficient number, since it is larger than the sum of its proper divisors (177929002029).

505213645011 is a wasteful number, since it uses less digits than its factorization.

505213645011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128106.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 505213645011 its reverse (110546312505), we get a palindrome (615759957516).

The spelling of 505213645011 in words is "five hundred five billion, two hundred thirteen million, six hundred forty-five thousand, eleven".