66840046284 has 48 divisors (see below), whose sum is σ = 172049996160. Its totient is φ = 20026976640.

The previous prime is 66840046253. The next prime is 66840046309. The reversal of 66840046284 is 48264004866.

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, 2832994 + ... + 2856489.

It is an arithmetic number, because the mean of its divisors is an integer number (3584374920).

Almost surely, 2^66840046284 is an apocalyptic number.

It is an amenable number.

66840046284 is an abundant number, since it is smaller than the sum of its proper divisors (105209949876).

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

66840046284 is a wasteful number, since it uses less digits than its factorization.

66840046284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689590 (or 5689588 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 66840046284 in words is "sixty-six billion, eight hundred forty million, forty-six thousand, two hundred eighty-four".