505406361222 has 24 divisors (see below), whose sum is σ = 1251482418576. Its totient is φ = 144401817456.

The previous prime is 505406361209. The next prime is 505406361223. The reversal of 505406361222 is 222163604505.

505406361222 is a `hidden beast` number, since 5 + 0 + 5 + 4 + 0 + 636 + 12 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505406361223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2005580673 + ... + 2005580924.

It is an arithmetic number, because the mean of its divisors is an integer number (52145100774).

Almost surely, 2^505406361222 is an apocalyptic number.

505406361222 is an abundant number, since it is smaller than the sum of its proper divisors (746076057354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505406361222 is a wasteful number, since it uses less digits than its factorization.

505406361222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011161612 (or 4011161609 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 505406361222 its reverse (222163604505), we get a palindrome (727569965727).

The spelling of 505406361222 in words is "five hundred five billion, four hundred six million, three hundred sixty-one thousand, two hundred twenty-two".