16912851505 has 32 divisors (see below), whose sum is σ = 22891696128. Its totient is φ = 11884190400.

The previous prime is 16912851499. The next prime is 16912851569. The reversal of 16912851505 is 50515821961.

It is a happy number.

It is not a de Polignac number, because 16912851505 - 2³ = 16912851497 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1088602 + ... + 1104028.

It is an arithmetic number, because the mean of its divisors is an integer number (715365504).

Almost surely, 2^16912851505 is an apocalyptic number.

It is an amenable number.

16912851505 is a deficient number, since it is larger than the sum of its proper divisors (5978844623).

16912851505 is a wasteful number, since it uses less digits than its factorization.

16912851505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16117.

The product of its (nonzero) digits is 108000, while the sum is 43.

The spelling of 16912851505 in words is "sixteen billion, nine hundred twelve million, eight hundred fifty-one thousand, five hundred five".