66318555101 has 16 divisors (see below), whose sum is σ = 67315143168. Its totient is φ = 65329470000.

The previous prime is 66318555071. The next prime is 66318555179. The reversal of 66318555101 is 10155581366.

It is a cyclic number.

It is not a de Polignac number, because 66318555101 - 2¹⁴ = 66318538717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66318545101) 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 in 15 ways as a sum of consecutive naturals, for example, 33375230 + ... + 33377216.

It is an arithmetic number, because the mean of its divisors is an integer number (4207196448).

Almost surely, 2^66318555101 is an apocalyptic number.

It is an amenable number.

66318555101 is a deficient number, since it is larger than the sum of its proper divisors (996588067).

66318555101 is a wasteful number, since it uses less digits than its factorization.

66318555101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 66318555101 in words is "sixty-six billion, three hundred eighteen million, five hundred fifty-five thousand, one hundred one".