518146317164 has 72 divisors (see below), whose sum is σ = 1063257447168. Its totient is φ = 220285850400.

The previous prime is 518146317151. The next prime is 518146317167. The reversal of 518146317164 is 461713641815.

It is not an unprimeable number, because it can be changed into a prime (518146317167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21978047 + ... + 22001609.

It is an arithmetic number, because the mean of its divisors is an integer number (14767464544).

Almost surely, 2^518146317164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518146317164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531628723584).

518146317164 is an abundant number, since it is smaller than the sum of its proper divisors (545111130004).

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

518146317164 is a wasteful number, since it uses less digits than its factorization.

518146317164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24475 (or 24466 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

Adding to 518146317164 its reverse (461713641815), we get a palindrome (979859958979).

The spelling of 518146317164 in words is "five hundred eighteen billion, one hundred forty-six million, three hundred seventeen thousand, one hundred sixty-four".