65665016530 has 16 divisors (see below), whose sum is σ = 119059784280. Its totient is φ = 26074283392.

The previous prime is 65665016503. The next prime is 65665016569. The reversal of 65665016530 is 3561056656.

65665016530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 59340472801 + 6324543729 = 243599^2 + 79527^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23963965 + ... + 23966704.

Almost surely, 2^65665016530 is an apocalyptic number.

65665016530 is a deficient number, since it is larger than the sum of its proper divisors (53394767750).

65665016530 is a wasteful number, since it uses less digits than its factorization.

65665016530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47930813.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 65665016530 in words is "sixty-five billion, six hundred sixty-five million, sixteen thousand, five hundred thirty".