66484464407 has 4 divisors (see below), whose sum is σ = 66496421160. Its totient is φ = 66472507656.

The previous prime is 66484464367. The next prime is 66484464439. The reversal of 66484464407 is 70446448466.

It is a happy number.

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 66484464407 - 2¹² = 66484460311 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 (66484464307) 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, 5970032 + ... + 5981157.

It is an arithmetic number, because the mean of its divisors is an integer number (16624105290).

Almost surely, 2^66484464407 is an apocalyptic number.

66484464407 is a deficient number, since it is larger than the sum of its proper divisors (11956753).

66484464407 is a wasteful number, since it uses less digits than its factorization.

66484464407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11956752.

The product of its (nonzero) digits is 12386304, while the sum is 53.

The spelling of 66484464407 in words is "sixty-six billion, four hundred eighty-four million, four hundred sixty-four thousand, four hundred seven".