16002200861 has 16 divisors (see below), whose sum is σ = 17160490224. Its totient is φ = 14869069824.

The previous prime is 16002200839. The next prime is 16002200867. The reversal of 16002200861 is 16800220061.

It can be written as a sum of positive squares in 8 ways, for example, as 2358559225 + 13643641636 = 48565^2 + 116806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16002200861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16002200861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16002200867) 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, 477491 + ... + 509903.

It is an arithmetic number, because the mean of its divisors is an integer number (1072530639).

Almost surely, 2^16002200861 is an apocalyptic number.

It is an amenable number.

16002200861 is a deficient number, since it is larger than the sum of its proper divisors (1158289363).

16002200861 is a wasteful number, since it uses less digits than its factorization.

16002200861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32800.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 16002200861 in words is "sixteen billion, two million, two hundred thousand, eight hundred sixty-one".