66020884218 has 32 divisors (see below), whose sum is σ = 146819478720. Its totient is φ = 21991001040.

The previous prime is 66020884217. The next prime is 66020884219. The reversal of 66020884218 is 81248802066.

It is an interprime number because it is at equal distance from previous prime (66020884217) and next prime (66020884219).

It is a super-2 number, since 2×66020884218² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66020884213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368080 + ... + 517227.

It is an arithmetic number, because the mean of its divisors is an integer number (4588108710).

Almost surely, 2^66020884218 is an apocalyptic number.

66020884218 is an abundant number, since it is smaller than the sum of its proper divisors (80798594502).

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

66020884218 is a wasteful number, since it uses less digits than its factorization.

66020884218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886699 (or 886693 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 66020884218 in words is "sixty-six billion, twenty million, eight hundred eighty-four thousand, two hundred eighteen".