20099016165 has 16 divisors (see below), whose sum is σ = 32176565568. Its totient is φ = 10713428736.

The previous prime is 20099016163. The next prime is 20099016181. The reversal of 20099016165 is 56161099002.

It is not a de Polignac number, because 20099016165 - 2¹ = 20099016163 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20099016163) 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, 350367 + ... + 403676.

It is an arithmetic number, because the mean of its divisors is an integer number (2011035348).

Almost surely, 2^20099016165 is an apocalyptic number.

It is an amenable number.

20099016165 is a deficient number, since it is larger than the sum of its proper divisors (12077549403).

20099016165 is a wasteful number, since it uses less digits than its factorization.

20099016165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755828.

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 20099016165 in words is "twenty billion, ninety-nine million, sixteen thousand, one hundred sixty-five".