66884829712 has 40 divisors (see below), whose sum is σ = 135602193920. Its totient is φ = 31920272640.

The previous prime is 66884829691. The next prime is 66884829721. The reversal of 66884829712 is 21792848866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887412 + ... + 959827.

It is an arithmetic number, because the mean of its divisors is an integer number (3390054848).

Almost surely, 2^66884829712 is an apocalyptic number.

66884829712 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66884829712 is an abundant number, since it is smaller than the sum of its proper divisors (68717364208).

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

66884829712 is a wasteful number, since it uses less digits than its factorization.

66884829712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847351 (or 1847345 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 61.

The spelling of 66884829712 in words is "sixty-six billion, eight hundred eighty-four million, eight hundred twenty-nine thousand, seven hundred twelve".