505329731218 has 16 divisors (see below), whose sum is σ = 827799086016. Its totient is φ = 229944188880.

The previous prime is 505329731177. The next prime is 505329731237. The reversal of 505329731218 is 812137923505.

It is a super-2 number, since 2×505329731218² (a number of 24 digits) contains 22 as substring.

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, 136869696 + ... + 136873387.

It is an arithmetic number, because the mean of its divisors is an integer number (51737442876).

Almost surely, 2^505329731218 is an apocalyptic number.

505329731218 is a deficient number, since it is larger than the sum of its proper divisors (322469354798).

505329731218 is a wasteful number, since it uses less digits than its factorization.

505329731218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273743169.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 505329731218 in words is "five hundred five billion, three hundred twenty-nine million, seven hundred thirty-one thousand, two hundred eighteen".