20160206065 has 8 divisors (see below), whose sum is σ = 24194327400. Its totient is φ = 16126778112.

The previous prime is 20160206029. The next prime is 20160206069. The reversal of 20160206065 is 56060206102.

It can be written as a sum of positive squares in 4 ways, for example, as 1373665969 + 18786540096 = 37063^2 + 137064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20160206065 - 2¹⁷ = 20160074993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20160206069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107074 + ... + 227563.

It is an arithmetic number, because the mean of its divisors is an integer number (3024290925).

Almost surely, 2^20160206065 is an apocalyptic number.

It is an amenable number.

20160206065 is a deficient number, since it is larger than the sum of its proper divisors (4034121335).

20160206065 is a wasteful number, since it uses less digits than its factorization.

20160206065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346691.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20160206065 in words is "twenty billion, one hundred sixty million, two hundred six thousand, sixty-five".