65116665001 has 4 divisors (see below), whose sum is σ = 65351743492. Its totient is φ = 64881586512.

The previous prime is 65116664947. The next prime is 65116665067. The reversal of 65116665001 is 10056661156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5727462400 + 59389202601 = 75680^2 + 243699^2 .

It is a cyclic number.

It is not a de Polignac number, because 65116665001 - 2¹⁷ = 65116533929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65116665091) 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, 117538830 + ... + 117539383.

It is an arithmetic number, because the mean of its divisors is an integer number (16337935873).

Almost surely, 2^65116665001 is an apocalyptic number.

It is an amenable number.

65116665001 is a deficient number, since it is larger than the sum of its proper divisors (235078491).

65116665001 is a wasteful number, since it uses less digits than its factorization.

65116665001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235078490.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 65116665001 in words is "sixty-five billion, one hundred sixteen million, six hundred sixty-five thousand, one".