16510511616 has 160 divisors (see below), whose sum is σ = 44851920960. Its totient is φ = 5396004864.

The previous prime is 16510511609. The next prime is 16510511651. The reversal of 16510511616 is 61611501561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25676991 + ... + 25677633.

It is an arithmetic number, because the mean of its divisors is an integer number (280324506).

Almost surely, 2^16510511616 is an apocalyptic number.

16510511616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16510511616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22425960480).

16510511616 is an abundant number, since it is smaller than the sum of its proper divisors (28341409344).

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

16510511616 is an equidigital number, since it uses as much as digits as its factorization.

16510511616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 16510511616 in words is "sixteen billion, five hundred ten million, five hundred eleven thousand, six hundred sixteen".