2016201651 has 4 divisors (see below), whose sum is σ = 2688268872. Its totient is φ = 1344134432.

The previous prime is 2016201641. The next prime is 2016201703. The reversal of 2016201651 is 1561026102.

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

It is a cyclic number.

It is not a de Polignac number, because 2016201651 - 2¹⁵ = 2016168883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2016201641) by changing a digit.

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, 336033606 + ... + 336033611.

It is an arithmetic number, because the mean of its divisors is an integer number (672067218).

Almost surely, 2^2016201651 is an apocalyptic number.

2016201651 is a deficient number, since it is larger than the sum of its proper divisors (672067221).

2016201651 is an equidigital number, since it uses as much as digits as its factorization.

2016201651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672067220.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 2016201651 is about 44902.1341474990. The cubic root of 2016201651 is about 1263.3140378436.

Adding to 2016201651 its reverse (1561026102), we get a palindrome (3577227753).

The spelling of 2016201651 in words is "two billion, sixteen million, two hundred one thousand, six hundred fifty-one".