66818582202 has 32 divisors (see below), whose sum is σ = 135634682880. Its totient is φ = 21941215920.

The previous prime is 66818582147. The next prime is 66818582249. The reversal of 66818582202 is 20228581866.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50877 + ... + 369087.

It is an arithmetic number, because the mean of its divisors is an integer number (4238583840).

Almost surely, 2^66818582202 is an apocalyptic number.

66818582202 is an abundant number, since it is smaller than the sum of its proper divisors (68816100678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66818582202 is a wasteful number, since it uses less digits than its factorization.

66818582202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318738.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 66818582202 in words is "sixty-six billion, eight hundred eighteen million, five hundred eighty-two thousand, two hundred two".