66354258009 has 8 divisors (see below), whose sum is σ = 95277908992. Its totient is φ = 40833389520.

The previous prime is 66354258007. The next prime is 66354258013. The reversal of 66354258009 is 90085245366.

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

It is not a de Polignac number, because 66354258009 - 2¹ = 66354258007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66354258007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850695577 + ... + 850695654.

It is an arithmetic number, because the mean of its divisors is an integer number (11909738624).

Almost surely, 2^66354258009 is an apocalyptic number.

It is an amenable number.

66354258009 is a deficient number, since it is larger than the sum of its proper divisors (28923650983).

66354258009 is a wasteful number, since it uses less digits than its factorization.

66354258009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701391247.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 66354258009 in words is "sixty-six billion, three hundred fifty-four million, two hundred fifty-eight thousand, nine".