66500525011 has 8 divisors (see below), whose sum is σ = 68186822544. Its totient is φ = 64830211680.

The previous prime is 66500524969. The next prime is 66500525029. The reversal of 66500525011 is 11052500566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66500525011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66500525411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987625 + ... + 4004266.

It is an arithmetic number, because the mean of its divisors is an integer number (8523352818).

Almost surely, 2^66500525011 is an apocalyptic number.

66500525011 is a deficient number, since it is larger than the sum of its proper divisors (1686297533).

66500525011 is a wasteful number, since it uses less digits than its factorization.

66500525011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7992101.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 66500525011 in words is "sixty-six billion, five hundred million, five hundred twenty-five thousand, eleven".