66229140309 has 4 divisors (see below), whose sum is σ = 88305520416. Its totient is φ = 44152760204.

The previous prime is 66229140287. The next prime is 66229140319. The reversal of 66229140309 is 90304192266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66229140309 - 2⁸ = 66229140053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66229140319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11038190049 + ... + 11038190054.

It is an arithmetic number, because the mean of its divisors is an integer number (22076380104).

Almost surely, 2^66229140309 is an apocalyptic number.

It is an amenable number.

66229140309 is a deficient number, since it is larger than the sum of its proper divisors (22076380107).

66229140309 is a wasteful number, since it uses less digits than its factorization.

66229140309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22076380106.

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 66229140309 in words is "sixty-six billion, two hundred twenty-nine million, one hundred forty thousand, three hundred nine".