66008468140 has 12 divisors (see below), whose sum is σ = 138617783136. Its totient is φ = 26403387248.

The previous prime is 66008468137. The next prime is 66008468153. The reversal of 66008468140 is 4186480066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650211684 + ... + 1650211723.

It is an arithmetic number, because the mean of its divisors is an integer number (11551481928).

Almost surely, 2^66008468140 is an apocalyptic number.

It is an amenable number.

66008468140 is an abundant number, since it is smaller than the sum of its proper divisors (72609314996).

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

66008468140 is a wasteful number, since it uses less digits than its factorization.

66008468140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300423416 (or 3300423414 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 66008468140 in words is "sixty-six billion, eight million, four hundred sixty-eight thousand, one hundred forty".