66562204009 has 8 divisors (see below), whose sum is σ = 76237551488. Its totient is φ = 56928471840.

The previous prime is 66562203997. The next prime is 66562204013. The reversal of 66562204009 is 90040226566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66562204009 - 2⁷ = 66562203881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66562204099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10400397 + ... + 10406794.

It is an arithmetic number, because the mean of its divisors is an integer number (9529693936).

Almost surely, 2^66562204009 is an apocalyptic number.

It is an amenable number.

66562204009 is a deficient number, since it is larger than the sum of its proper divisors (9675347479).

66562204009 is a wasteful number, since it uses less digits than its factorization.

66562204009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20807655.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 66562204009 in words is "sixty-six billion, five hundred sixty-two million, two hundred four thousand, nine".