66601016116 has 6 divisors (see below), whose sum is σ = 116551778210. Its totient is φ = 33300508056.

The previous prime is 66601016051. The next prime is 66601016129. The reversal of 66601016116 is 61161010666.

It can be written as a sum of positive squares in only one way, i.e., 56691610000 + 9909406116 = 238100^2 + 99546^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325127011 + ... + 8325127018.

Almost surely, 2^66601016116 is an apocalyptic number.

It is an amenable number.

66601016116 is a deficient number, since it is larger than the sum of its proper divisors (49950762094).

66601016116 is a wasteful number, since it uses less digits than its factorization.

66601016116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16650254033 (or 16650254031 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 66601016116 in words is "sixty-six billion, six hundred one million, sixteen thousand, one hundred sixteen".