16000055165 has 4 divisors (see below), whose sum is σ = 19200066204. Its totient is φ = 12800044128.

The previous prime is 16000055111. The next prime is 16000055177. The reversal of 16000055165 is 56155000061.

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 4616658916 + 11383396249 = 67946^2 + 106693^2 .

It is a cyclic number.

It is not a de Polignac number, because 16000055165 - 2¹⁰ = 16000054141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600005512 + ... + 1600005521.

It is an arithmetic number, because the mean of its divisors is an integer number (4800016551).

Almost surely, 2^16000055165 is an apocalyptic number.

It is an amenable number.

16000055165 is a deficient number, since it is larger than the sum of its proper divisors (3200011039).

16000055165 is an equidigital number, since it uses as much as digits as its factorization.

16000055165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200011038.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 16000055165 in words is "sixteen billion, fifty-five thousand, one hundred sixty-five".