65516665011 has 32 divisors (see below), whose sum is σ = 100087641600. Its totient is φ = 37343462400.

The previous prime is 65516665009. The next prime is 65516665073. The reversal of 65516665011 is 11056661556.

65516665011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65516665011 - 2¹ = 65516665009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65516665001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16170936 + ... + 16174986.

It is an arithmetic number, because the mean of its divisors is an integer number (3127738800).

Almost surely, 2^65516665011 is an apocalyptic number.

65516665011 is a deficient number, since it is larger than the sum of its proper divisors (34570976589).

65516665011 is a wasteful number, since it uses less digits than its factorization.

65516665011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 65516665011 in words is "sixty-five billion, five hundred sixteen million, six hundred sixty-five thousand, eleven".