66466425507 has 8 divisors (see below), whose sum is σ = 88629129984. Its totient is φ = 44307335688.

The previous prime is 66466425469. The next prime is 66466425511. The reversal of 66466425507 is 70552466466.

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

It is not a de Polignac number, because 66466425507 - 2⁷ = 66466425379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66466425507.

It is not an unprimeable number, because it can be changed into a prime (66466425517) 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, 860463 + ... + 934520.

It is an arithmetic number, because the mean of its divisors is an integer number (11078641248).

Almost surely, 2^66466425507 is an apocalyptic number.

66466425507 is a deficient number, since it is larger than the sum of its proper divisors (22162704477).

66466425507 is a wasteful number, since it uses less digits than its factorization.

66466425507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807329.

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 66466425507 in words is "sixty-six billion, four hundred sixty-six million, four hundred twenty-five thousand, five hundred seven".