16306716765021 has 16 divisors (see below), whose sum is σ = 21945927628800. Its totient is φ = 10769329276848.

The previous prime is 16306716764977. The next prime is 16306716765041. The reversal of 16306716765021 is 12056761760361.

It is not a de Polignac number, because 16306716765021 - 2¹³ = 16306716756829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16306716765041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16414590 + ... + 17379648.

It is an arithmetic number, because the mean of its divisors is an integer number (1371620476800).

Almost surely, 2^{16306716765021} is an apocalyptic number.

It is an amenable number.

16306716765021 is a deficient number, since it is larger than the sum of its proper divisors (5639210863779).

16306716765021 is a wasteful number, since it uses less digits than its factorization.

16306716765021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017808.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 16306716765021 in words is "sixteen trillion, three hundred six billion, seven hundred sixteen million, seven hundred sixty-five thousand, twenty-one".