16415516891265 has 16 divisors (see below), whose sum is σ = 26656839371328. Its totient is φ = 8624271560256.

The previous prime is 16415516891251. The next prime is 16415516891363. The reversal of 16415516891265 is 56219861551461.

It is not a de Polignac number, because 16415516891265 - 2¹¹ = 16415516889217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16415516891199 and 16415516891208.

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, 8166922822 + ... + 8166924831.

It is an arithmetic number, because the mean of its divisors is an integer number (1666052460708).

Almost surely, 2^{16415516891265} is an apocalyptic number.

16415516891265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16415516891265 is a deficient number, since it is larger than the sum of its proper divisors (10241322480063).

16415516891265 is a wasteful number, since it uses less digits than its factorization.

16415516891265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16333847728.

The product of its digits is 15552000, while the sum is 60.

The spelling of 16415516891265 in words is "sixteen trillion, four hundred fifteen billion, five hundred sixteen million, eight hundred ninety-one thousand, two hundred sixty-five".