16511705605050 has 96 divisors (see below), whose sum is σ = 42098212161024. Its totient is φ = 4279793760000.

The previous prime is 16511705604973. The next prime is 16511705605063. The reversal of 16511705605050 is 5050650711561.

It is a junction number, because it is equal to n+sod(n) for n = 16511705604993 and 16511705605011.

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 47 ways as a sum of consecutive naturals, for example, 3999000 + ... + 7001100.

It is an arithmetic number, because the mean of its divisors is an integer number (438523043344).

Almost surely, 2^{16511705605050} is an apocalyptic number.

16511705605050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16511705605050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21049106080512).

16511705605050 is an abundant number, since it is smaller than the sum of its proper divisors (25586506555974).

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

16511705605050 is a wasteful number, since it uses less digits than its factorization.

16511705605050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003144 (or 3003139 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 16511705605050 in words is "sixteen trillion, five hundred eleven billion, seven hundred five million, six hundred five thousand, fifty".