16495034721 has 48 divisors (see below), whose sum is σ = 24556234752. Its totient is φ = 9840387040.

The previous prime is 16495034711. The next prime is 16495034837. The reversal of 16495034721 is 12743059461.

16495034721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16495034721 - 2¹⁰ = 16495033697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16495034711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6485176 + ... + 6487718.

It is an arithmetic number, because the mean of its divisors is an integer number (511588224).

Almost surely, 2^16495034721 is an apocalyptic number.

16495034721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16495034721 is a deficient number, since it is larger than the sum of its proper divisors (8061200031).

16495034721 is a wasteful number, since it uses less digits than its factorization.

16495034721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2831 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 16495034721 in words is "sixteen billion, four hundred ninety-five million, thirty-four thousand, seven hundred twenty-one".