16516378915275 has 24 divisors (see below), whose sum is σ = 27307225400320. Its totient is φ = 8808688455840.

The previous prime is 16516378915273. The next prime is 16516378915279. The reversal of 16516378915275 is 57251987361561.

It is not a de Polignac number, because 16516378915275 - 2¹ = 16516378915273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16516378915271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17104014 + ... + 18043836.

Almost surely, 2^{16516378915275} is an apocalyptic number.

16516378915275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16516378915275 is a deficient number, since it is larger than the sum of its proper divisors (10790846485045).

16516378915275 is a wasteful number, since it uses less digits than its factorization.

16516378915275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174155 (or 1174150 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 66.

The spelling of 16516378915275 in words is "sixteen trillion, five hundred sixteen billion, three hundred seventy-eight million, nine hundred fifteen thousand, two hundred seventy-five".