16519802912 has 18 divisors (see below), whose sum is σ = 32524793469. Its totient is φ = 8259537920.

The previous prime is 16519802903. The next prime is 16519802963. The reversal of 16519802912 is 21920891561.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 16333862416 + 185940496 = 127804^2 + 13636^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=90884.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 715712 + ... + 738432.

Almost surely, 2^16519802912 is an apocalyptic number.

It is an amenable number.

16519802912 is a deficient number, since it is larger than the sum of its proper divisors (16004990557).

16519802912 is an frugal number, since it uses more digits than its factorization.

16519802912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45452 (or 22723 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 16519802912 in words is "sixteen billion, five hundred nineteen million, eight hundred two thousand, nine hundred twelve".