66003472257 has 8 divisors (see below), whose sum is σ = 88062117600. Its totient is φ = 43973570880.

The previous prime is 66003472243. The next prime is 66003472261. The reversal of 66003472257 is 75227430066.

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

It is not a de Polignac number, because 66003472257 - 2²⁰ = 66002423681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66003472207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7180632 + ... + 7189817.

It is an arithmetic number, because the mean of its divisors is an integer number (11007764700).

Almost surely, 2^66003472257 is an apocalyptic number.

It is an amenable number.

66003472257 is a deficient number, since it is larger than the sum of its proper divisors (22058645343).

66003472257 is a wasteful number, since it uses less digits than its factorization.

66003472257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14371983.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 66003472257 in words is "sixty-six billion, three million, four hundred seventy-two thousand, two hundred fifty-seven".