65665016526 has 16 divisors (see below), whose sum is σ = 131430994128. Its totient is φ = 21871512000.

The previous prime is 65665016503. The next prime is 65665016569. The reversal of 65665016526 is 62561056656.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4198255 + ... + 4213866.

It is an arithmetic number, because the mean of its divisors is an integer number (8214437133).

Almost surely, 2^65665016526 is an apocalyptic number.

65665016526 is an abundant number, since it is smaller than the sum of its proper divisors (65765977602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65665016526 is a wasteful number, since it uses less digits than its factorization.

65665016526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413427.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 65665016526 in words is "sixty-five billion, six hundred sixty-five million, sixteen thousand, five hundred twenty-six".