66188682803 has 8 divisors (see below), whose sum is σ = 68038465872. Its totient is φ = 64342105056.

The previous prime is 66188682773. The next prime is 66188682829. The reversal of 66188682803 is 30828688166.

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

It is a cyclic number.

It is not a de Polignac number, because 66188682803 - 2³⁴ = 49008813619 is a prime.

It is a super-2 number, since 2×66188682803² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66188682103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759425 + ... + 842082.

It is an arithmetic number, because the mean of its divisors is an integer number (8504808234).

Almost surely, 2^66188682803 is an apocalyptic number.

66188682803 is a deficient number, since it is larger than the sum of its proper divisors (1849783069).

66188682803 is a wasteful number, since it uses less digits than its factorization.

66188682803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602661.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 66188682803 in words is "sixty-six billion, one hundred eighty-eight million, six hundred eighty-two thousand, eight hundred three".