66001106516 has 6 divisors (see below), whose sum is σ = 115501936410. Its totient is φ = 33000553256.

The previous prime is 66001106513. The next prime is 66001106537. The reversal of 66001106516 is 61560110066.

It can be written as a sum of positive squares in only one way, i.e., 60391096516 + 5610010000 = 245746^2 + 74900^2 .

It is a super-2 number, since 2×66001106516² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66001106513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250138311 + ... + 8250138318.

It is an arithmetic number, because the mean of its divisors is an integer number (19250322735).

Almost surely, 2^66001106516 is an apocalyptic number.

It is an amenable number.

66001106516 is a deficient number, since it is larger than the sum of its proper divisors (49500829894).

66001106516 is a wasteful number, since it uses less digits than its factorization.

66001106516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500276633 (or 16500276631 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 66001106516 in words is "sixty-six billion, one million, one hundred six thousand, five hundred sixteen".