16395178065 has 32 divisors (see below), whose sum is σ = 29987086080. Its totient is φ = 7493105664.

The previous prime is 16395178049. The next prime is 16395178069. The reversal of 16395178065 is 56087159361.

It is not a de Polignac number, because 16395178065 - 2⁴ = 16395178049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16395177999 and 16395178017.

It is not an unprimeable number, because it can be changed into a prime (16395178069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472221 + ... + 505749.

It is an arithmetic number, because the mean of its divisors is an integer number (937096440).

Almost surely, 2^16395178065 is an apocalyptic number.

16395178065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16395178065 is a deficient number, since it is larger than the sum of its proper divisors (13591908015).

16395178065 is a wasteful number, since it uses less digits than its factorization.

16395178065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38201.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 16395178065 in words is "sixteen billion, three hundred ninety-five million, one hundred seventy-eight thousand, sixty-five".