16505066515 has 16 divisors (see below), whose sum is σ = 22646496960. Its totient is φ = 11312271360.

The previous prime is 16505066507. The next prime is 16505066527. The reversal of 16505066515 is 51566050561.

It is not a de Polignac number, because 16505066515 - 2³ = 16505066507 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40470 + ... + 186139.

It is an arithmetic number, because the mean of its divisors is an integer number (1415406060).

Almost surely, 2^16505066515 is an apocalyptic number.

16505066515 is a deficient number, since it is larger than the sum of its proper divisors (6141430445).

16505066515 is a wasteful number, since it uses less digits than its factorization.

16505066515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228702.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 16505066515 in words is "sixteen billion, five hundred five million, sixty-six thousand, five hundred fifteen".