16065978803 has 8 divisors (see below), whose sum is σ = 18411151872. Its totient is φ = 13733314056.

The previous prime is 16065978793. The next prime is 16065978823. The reversal of 16065978803 is 30887956061.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16065978803 - 2⁴ = 16065978787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16065978823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124325 + ... + 3129462.

It is an arithmetic number, because the mean of its divisors is an integer number (2301393984).

Almost surely, 2^16065978803 is an apocalyptic number.

16065978803 is a deficient number, since it is larger than the sum of its proper divisors (2345173069).

16065978803 is an equidigital number, since it uses as much as digits as its factorization.

16065978803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254161.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 16065978803 in words is "sixteen billion, sixty-five million, nine hundred seventy-eight thousand, eight hundred three".