16306532041821 has 64 divisors (see below), whose sum is σ = 25035937382400. Its totient is φ = 9247873130496.

The previous prime is 16306532041819. The next prime is 16306532041829. The reversal of 16306532041821 is 12814023560361.

It is not a de Polignac number, because 16306532041821 - 2¹ = 16306532041819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16306532041829) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2177394045 + ... + 2177401533.

It is an arithmetic number, because the mean of its divisors is an integer number (391186521600).

Almost surely, 2^{16306532041821} is an apocalyptic number.

It is an amenable number.

16306532041821 is a deficient number, since it is larger than the sum of its proper divisors (8729405340579).

16306532041821 is a wasteful number, since it uses less digits than its factorization.

16306532041821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 16306532041821 in words is "sixteen trillion, three hundred six billion, five hundred thirty-two million, forty-one thousand, eight hundred twenty-one".