505420662111 has 16 divisors (see below), whose sum is σ = 713570516064. Its totient is φ = 317110928384.

The previous prime is 505420662067. The next prime is 505420662163. The reversal of 505420662111 is 111266024505.

It is a cyclic number.

It is not a de Polignac number, because 505420662111 - 2²³ = 505412273503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505420662911) 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, 836101 + ... + 1307633.

It is an arithmetic number, because the mean of its divisors is an integer number (44598157254).

Almost surely, 2^505420662111 is an apocalyptic number.

505420662111 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

505420662111 is a deficient number, since it is larger than the sum of its proper divisors (208149853953).

505420662111 is a wasteful number, since it uses less digits than its factorization.

505420662111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492570.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 505420662111 its reverse (111266024505), we get a palindrome (616686686616).

The spelling of 505420662111 in words is "five hundred five billion, four hundred twenty million, six hundred sixty-two thousand, one hundred eleven".