66424645280 has 48 divisors (see below), whose sum is σ = 179346545280. Its totient is φ = 22774163712.

The previous prime is 66424645279. The next prime is 66424645321. The reversal of 66424645280 is 8254642466.

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, 29652740 + ... + 29654979.

It is an arithmetic number, because the mean of its divisors is an integer number (3736386360).

Almost surely, 2^66424645280 is an apocalyptic number.

It is an amenable number.

66424645280 is an abundant number, since it is smaller than the sum of its proper divisors (112921900000).

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

66424645280 is a wasteful number, since it uses less digits than its factorization.

66424645280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59307741 (or 59307733 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 66424645280 in words is "sixty-six billion, four hundred twenty-four million, six hundred forty-five thousand, two hundred eighty".