20010616165 has 4 divisors (see below), whose sum is σ = 24012739404. Its totient is φ = 16008492928.

The previous prime is 20010616133. The next prime is 20010616201. The reversal of 20010616165 is 56161601002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2725466436 + 17285149729 = 52206^2 + 131473^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010616165 - 2⁵ = 20010616133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2001061612 + ... + 2001061621.

It is an arithmetic number, because the mean of its divisors is an integer number (6003184851).

Almost surely, 2^20010616165 is an apocalyptic number.

It is an amenable number.

20010616165 is a deficient number, since it is larger than the sum of its proper divisors (4002123239).

20010616165 is an equidigital number, since it uses as much as digits as its factorization.

20010616165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002123238.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 20010616165 in words is "twenty billion, ten million, six hundred sixteen thousand, one hundred sixty-five".