66430632667 has 8 divisors (see below), whose sum is σ = 76773765600. Its totient is φ = 56300760384.

The previous prime is 66430632661. The next prime is 66430632679. The reversal of 66430632667 is 76623603466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66430632667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66430632667.

It is not an unprimeable number, because it can be changed into a prime (66430632661) 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, 53314492 + ... + 53315737.

It is an arithmetic number, because the mean of its divisors is an integer number (9596720700).

Almost surely, 2^66430632667 is an apocalyptic number.

66430632667 is a deficient number, since it is larger than the sum of its proper divisors (10343132933).

66430632667 is a wasteful number, since it uses less digits than its factorization.

66430632667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106630325.

The product of its (nonzero) digits is 3919104, while the sum is 49.

The spelling of 66430632667 in words is "sixty-six billion, four hundred thirty million, six hundred thirty-two thousand, six hundred sixty-seven".