66361448207 has 4 divisors (see below), whose sum is σ = 66411685296. Its totient is φ = 66311211120.

The previous prime is 66361448201. The next prime is 66361448227. The reversal of 66361448207 is 70284416366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66361448207 - 2⁴ = 66361448191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66361448201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25116563 + ... + 25119204.

It is an arithmetic number, because the mean of its divisors is an integer number (16602921324).

Almost surely, 2^66361448207 is an apocalyptic number.

66361448207 is a deficient number, since it is larger than the sum of its proper divisors (50237089).

66361448207 is a wasteful number, since it uses less digits than its factorization.

66361448207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50237088.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 66361448207 in words is "sixty-six billion, three hundred sixty-one million, four hundred forty-eight thousand, two hundred seven".