66884513862 has 32 divisors (see below), whose sum is σ = 134544275712. Its totient is φ = 22165998624.

The previous prime is 66884513777. The next prime is 66884513869. The reversal of 66884513862 is 26831548866.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66884513869) 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, 685543 + ... + 777005.

It is an arithmetic number, because the mean of its divisors is an integer number (4204508616).

Almost surely, 2^66884513862 is an apocalyptic number.

66884513862 is an abundant number, since it is smaller than the sum of its proper divisors (67659761850).

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

66884513862 is a wasteful number, since it uses less digits than its factorization.

66884513862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92172.

The product of its digits is 13271040, while the sum is 57.

The spelling of 66884513862 in words is "sixty-six billion, eight hundred eighty-four million, five hundred thirteen thousand, eight hundred sixty-two".