166503004301216 has 48 divisors (see below), whose sum is σ = 357692157512928. Its totient is φ = 75664323628800.

The previous prime is 166503004301201. The next prime is 166503004301239. The reversal of 166503004301216 is 612103400305661.

It is a self number, because there is not a number n which added to its sum of digits gives 166503004301216.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57523370 + ... + 60348521.

It is an arithmetic number, because the mean of its divisors is an integer number (7451919948186).

Almost surely, 2^{166503004301216} is an apocalyptic number.

166503004301216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166503004301216 is an abundant number, since it is smaller than the sum of its proper divisors (191189153211712).

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

166503004301216 is a wasteful number, since it uses less digits than its factorization.

166503004301216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117875925 (or 117875917 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 166503004301216 its reverse (612103400305661), we get a palindrome (778606404606877).

The spelling of 166503004301216 in words is "one hundred sixty-six trillion, five hundred three billion, four million, three hundred one thousand, two hundred sixteen".