505406323446 has 16 divisors (see below), whose sum is σ = 1011231926208. Its totient is φ = 168398894600.

The previous prime is 505406323417. The next prime is 505406323469. The reversal of 505406323446 is 644323604505.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 505406323398 and 505406323407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17454300 + ... + 17483231.

It is an arithmetic number, because the mean of its divisors is an integer number (63201995388).

Almost surely, 2^505406323446 is an apocalyptic number.

505406323446 is an abundant number, since it is smaller than the sum of its proper divisors (505825602762).

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

505406323446 is a wasteful number, since it uses less digits than its factorization.

505406323446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34939947.

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 505406323446 in words is "five hundred five billion, four hundred six million, three hundred twenty-three thousand, four hundred forty-six".