505333881423 has 18 divisors (see below), whose sum is σ = 834211277432. Its totient is φ = 288758993760.

The previous prime is 505333881421. The next prime is 505333881439. The reversal of 505333881423 is 324188333505.

505333881423 is a `hidden beast` number, since 5 + 0 + 533 + 3 + 88 + 14 + 23 = 666.

It is not a de Polignac number, because 505333881423 - 2¹ = 505333881421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505333881421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5597563 + ... + 5687123.

Almost surely, 2^505333881423 is an apocalyptic number.

505333881423 is a deficient number, since it is larger than the sum of its proper divisors (328877396009).

505333881423 is an frugal number, since it uses more digits than its factorization.

505333881423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179135 (or 89571 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 505333881423 in words is "five hundred five billion, three hundred thirty-three million, eight hundred eighty-one thousand, four hundred twenty-three".